Since its foundation, the key ideology has been Marxism – Leninism, but since the introduction of a mixed economy in the late 1980s and 1990s, it has lost its monopolistic ideological and moral legitimacy.

The Unknown Dimension: European Marxism Since Lenin.

Since the creation of the ideology of Marxism it has been scrutinized greatly.

Since the Universe could, under different circumstances, conceivably not exist ( contingency ), its existence must have a cause – not merely another contingent thing, but something that exists by necessity ( something that must exist in order for anything else to exist ).

Since 1994, the 92 ARW has been involved in virtually every contingency mission around the world.

Since 1994, the Eighth has participated in a string of contingency operations, such as the 1996 Operation " Desert Strike " against Iraq, the 1998 Operation " Desert Fox " ( similarly named but in no way associated with Field Marshal Erwin Rommel ) against Iraq, which featured the B-1B in its combat debut, and 1999 Operation " Allied Force " against the Federal Republic of Yugoslavia, which involved the B-2A Spirit in its first uncontested mission of aggression, which was officially designated " combat ".

Since the inception of the Special Operations Capable ( SOC ) Marine Expeditionary Unit's ( MEU's ) in support of contingency operations in the Western Pacific, the 1st Marine Regiment has been the SOC Regiment of the 1st Marine Division.

Since a national interpretation cannot be avoided it is unfortunate that the elections were not held in a way to maximize party responsibility and the educational effect of mass political participation.

Since they were hunting for national defense contracts, Adam Herberet, a man of surprising resources, entered the combination as a silent partner because of his political connections.

Since 2002, when the 27-year civil war ended, the country has worked to repair and improve ravaged infrastructure and weakened political and social institutions.

Since the Fall of Communism, the country's political leadership decided to pursue a pro-NATO policy, thus reducing military personnel and weaponry.

Since businesses make money and money leads to political power, business will inevitably use their power to influence governments.

Since its return to democracy in 1990, Chile has been an active participant in the international political arena.

Since Óscar Arias returned to office, the political debate has centered on whether to approve or reject CAFTA.

Since Chicanismo covers a wide array of political, religious and ethnic beliefs, and not everybody agrees with what exactly a Chicano is, most new Latino immigrants see it as a lost cause, as a lost culture, because Chicanos do not identify with Mexico or wherever their parents migrated from as new immigrants do.

Since the KMT had completed the first step of revolution through seizure of power in 1928, Chiang's rule thus began a period of what his party considered to be " political tutelage " in Sun Yat-sen's name.

Since the dissolution of Dead Kennedys, Biafra has continued to collaborate and record with other artists, including Mojo Nixon, Al Jourgensen of Ministry, and the Melvins, and has become a spoken word performer, covering political topics in particular.

Since then, the country has benefited from political stability.

Since independence, the two Presidents ( Macías and Obiang ) have been the dominant political forces in Equatorial Guinea.

Since 1979, President Obiang has been constrained only by a need to maintain a consensus among his advisers and political supporters, most of whom are drawn from the Nguema family in Mongomo, in the eastern part of Río Muni.

Since independence Eritrea's relationship with Ethiopia was entirely political, especially in the resuscitation and expansion of IGAD's scope.

Since then, it has been widely used in the social sciences, including anthropology, economics, philosophy, and political science.

Since Ōtomo had weak political support from his maternal relatives, the general wisdom of the time held that it was not a good idea for him to ascend to the throne, yet Tenji was obsessed with the idea.

Since Arafat's death, he is formally head of Fatah's political bureau and chairman, but his actual political following within Fatah appears limited.

Since real political power belongs to the sole legal party, in certain states under Marxist constitutions of the constitutionally socialist state type inspired by the former Union of Soviet Socialist Republics ( USSR ) and its constitutive Soviet republics, there was no formal office of head of state, but rather the leader of the legislative branch was considered to be the closest common equivalent of a head of state as a natural person.

Since World War II France has been a leading member in the UN, the European Union and NATO, and remains a strong economic, cultural, military and political influence in the 21st century.

Since the early 19th century, counties have adapted by legislation to meet new administrative and political requirements.

Since independence in 1962 there have been political and economic disturbances, as well as a number of strong political leaders.

Since leaving office Major has maintained a low profile, indulging his love of cricket as president of Surrey County Cricket Club until 2002 ( and Honorary Life Vice-President since 2002 ) and commentating on political developments in the manner of a wise elder statesman.

Since her election, she has become one of the most popular political figures in Latvia.

Since then, the main characters ’ ages and career developments have tracked that of standard media portrayals of baby boomers, with jobs in advertising, law enforcement, and the dot-com boom.

Since the construction of the Öresund bridge, Malmö has undergone a major transformation with impressive architectural developments, attracting new biotech and IT companies, and particularly students through Malmö University College.

Since the inception of RFC 4875 there has been tremendous surge in interest and deployment of MPLS multicast and this has led to several new developments both in the IETF and in shipping products.

Since the late 1990s, the spirit's worldwide popularity has led to some important developments:

Since the inception of Drum Corps International in the 1970s, many marching bands that perform field shows have adopted changes to the activity that parallel developments with modern drum and bugle corps.

Since the arrival of Lou Gerstner in 1993, IBM has viewed such colossal internal developments as too risky.

Since the 1960s, with the latest developments on commercial aviation, the highest ranked football teams of Mozambique and the other African overseas provinces of Portugal, started to compete in the Taça de Portugal ( the Portuguese Cup ).

Since Millikan's work formed some of the basis for modern particle physics, it is ironic that he was rather conservative in his opinions about 20th century developments in physics, as in the case of the photon theory.

Since their first introduction, analog tape recorders have experienced a long series of progressive developments resulting in increased sound quality, convenience, and versatility.

Since Evagoras was an enemy of Persia, and many of the Athenian gains threatened Persian interests, these developments prompted Artaxerxes to switch his support from Athens and her allies to Sparta.

Since establishing the first sewer facility plan in 1988, Kildeer has approved subdivisions designed with sewer infrastructure to accommodate future connections of upstream developments.

Since the census in 2000, Lakemoor has had numerous new developments which has greatly increased the population of the city.

Since about 1980, there has been a considerable amount of new development in the North end of the city, with many new single-and multi-family housing developments, particularly along North Main Street.

Since the Second World War, housing developments, shopping centers and business parks have sprung up, leaving as remnants of the long tradition of agriculture in Montgomery roadside stands, riding stables and the like.

Since 2008, three developers have considered low income developments in Sunnyvale, but no applications have been filed with the Town.

Since the 1990s, developments in the downtown core include the University of Washington, Tacoma ; Tacoma Link, the first modern electric light rail service in the state ; the state's highest density of art and history museums ; and a restored urban waterfront, the Thea Foss Waterway.

Since the late 1990s, and particularly in the early 2000s, the population has been expanding at a much faster rate, with town rejuvenation, new retail and entertainment facilities and many new housing developments.

Since the closing of the military base, many of the existing buildings have been renovated or reconstructed ; housing developments now exist, along with a growing business park, a new hotel, restaurants, a disc golf course, and a golf course.

Since the late 2000s ( decade ) the southeastern district of Surco has experienced a significant increase in upscale corporate developments in the area comprised by avenues Manuel Holguín, El Derby, El Polo and La Encalada due to lower restrictions to grant construction licences and proximity to residential middle and upper class districts and is set to become, after traditional San Isidro and Miraflores, the new corporate center of Lima.

Since the late 1990s, and particularly in the early 2000s, the population has been expanding at a much faster rate, with town rejuvenation, new retail and entertainment facilities and many new housing developments.

Since the 1970s, developments in protective gear have made climbing much safer and more dynamic.

Since 2001 she has been member of the Nationaler Ethikrat ( National Ethics Council of Germany ) for the ethical assessment of new developments in the life sciences and their influence on the individual and society.

Since 1945, developments in international law such as the United Nations Charter, which prohibits both the threat and use of force in international conflicts, have made declarations of war largely obsolete in international relations.