Since 1990, AIX has served as the primary operating system for the RS / 6000 series ( later renamed IBM eServer pSeries, then IBM System p, and now IBM Power Systems ).

Since German reunification on 3 October 1990, Berlin has been one of the three city states, together with Hamburg and Bremen, among the present 16 states of Germany.

Since the transition to a democratic government in 1990, Benin has undergone an economic recovery.

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

Since 1990, the ACR and the Czech Armed Forces have contributed to numerous peacekeeping and humanitarian operations, including IFOR, SFOR, and EUFOR Althea in Bosnia, Desert Shield / Desert Storm, Afghanistan, Kosovo, Albania, Turkey, Pakistan and with the Coalition forces in Iraq.

Since then they have had four separate periods in the top flight of English football: between 1936 – 1957, 1986 – 1990, 1998 – 1999 and 2000 – 2007.

* Rummel, Rudolph Joseph ( 1990 ) Lethal Politics: Soviet Genocide and Mass Murder Since 1917.

Since 1990 half of the world's rain forests have been destroyed.

Since 1993, the Eritrean People ’ s Liberation Front army has been involved in tree planting ; the annual average rate of deforestation during 1990 – 2000 was 0. 3 percent.

Since 1990, Estonia lost about 15 % of its population ( 230, 000 people ).

Since 1990 there has been an emergence of a German minority group, Elbinger Minderheit.

Since 1951, Germany has been at the heart of European Integration and after German reunification in 1990 further promoted peaceful integration with its neighbors.

Since 1990 ECOWAS has been engaged in a peacekeeping mission in Liberia to which Ghana has contributed a large contingent of troops.

Since the reunification of 1990, Schwarzbier, which was common in East Germany, but could hardly be found in West Germany, has become increasingly popular in Germany as a whole.

Since 1990, Hungary's top foreign policy goal has been achieving integration into Western economic and security organizations.

Since German reunification in 1990, and the accession of some Central European and Baltic States into the European Union in 2004, the Port of Hamburg has restarted ambitions for regaining its position as the region's largest deep-sea port for container shipping and its major commercial and trading centre.

Since 1990, Hezbollah has been accused of the following attacks and attempted attacks.

Since Lithuania declared independence on March 11, 1990, it kept strong democratic traditions.

Since 1990, more than 1, 500 foreign companies from 61 countries have invested a total of $ 338. 3 million in Mongolia.

Since then, it has undergone seven revisions, in 1990 ( London ), 1991 ( Nairobi ), 1992 ( Copenhagen ), 1993 ( Bangkok ), 1995 ( Vienna ), 1997 ( Montreal ), and 1999 ( Beijing ).

Since 1990 two variants of this song have been heard-adapted for both her successors ; replacing ' Major ' for ' Maggie ' during the tenure of John Major and ' Tony ' for ' Maggie ' since Tony Blair's plan for the Iraq War in 2003.

Since Independence in 1990, Namibia has seen a dramatic growth in radio stations, with both commercial ( for instance Radio 99, Radio Wave, Radio Energy, Omulunga Radio, West Coast FM, etc.

Since 1990 the mission of the EPS has been to ensure the security of the national borders and to deal with internal disturbances.

Since 1990, the NTSB has maintained a Most Wanted List of Transportation Safety Improvements, in which it highlights those recommendations that would provide the most significant — and sometimes immediate — benefit to the traveling public.

* Since 1976, Bulgaria has an embassy in Luanda.

Since 1996, Bulgaria has an embassy in Sarajevo.

Since 2001, Bulgaria has managed to attract considerable amounts of Foreign Direct Investment ( FDI ).

Since Bulgarian lev is anyway bounded to Euro Bulgaria is looking for more positive outcomes of the becoming a member of the Eurozone rather than risks.

Since the late 90s in Austria, slow release oral morphine has been used alongside methadone and buprenorphine for OST and more recently it has been approved in Slovenia and Bulgaria, and it has gained approval in other EU nations including the United Kingdom, although its use is not as of yet not as widespread.

Since the Bulgars had been raiding Byzantine lands since 976, the Byzantine government sought to cause dissension amongst them by first allowing the escape of their captive emperor Boris II of Bulgaria.

Since the 1880s, the number of territorial management units in Bulgaria has varied from seven to 26.

* Since April 1918, Bulgaria has embassy in Oslo.

Since Venizelos's return to power, Athens was effectively at war with the Central Powers, and the Greek soldiers battled those of Bulgaria in the north.

Since 1997, Bulgaria has been divided into 28 oblasti, usually translated as provinces.

Since the year 2000, Bulgarian archaeologist Georgi Kitov has made discoveries in Central Bulgaria which were summarized as " The Valley of the Thracian Kings ".

Since 1997, Bulgaria has been in a system of currency board and all Bulgarian currency in circulation has been backed 100 % by the foreign exchange reserves of the Bulgarian National Bank ( BNB ).

Since its establishment, more member states have joined through a series of accession treaties, from the UK, Ireland, Denmark and Norway in 1972 ( though Norway did not end up joining ), Greece in 1979, Spain and Portugal 1985, Austria, Finland, Norway and Sweden in 1994 ( though again Norway failed to join, because of lack of support in the referendum ), the Czech Republic, Cyprus, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia and Slovenia in 2004, and Romania and Bulgaria in 2007.

Since 1717, Inđija was part of the Habsburg Monarchy, and became a feudal domain of Count Marko Pejačević of the Pejačević family that originated from Chiprovtsi, Bulgaria.

Since the fifth IPhO, held in Sofia, Bulgaria, in 1971, each team has consisted of five pupils and two supervisors.

Since about the 1960s, routine episiotomies have been rapidly losing popularity among obstetricians and midwives in almost all countries in Europe ( except for Poland and Bulgaria ), Australia, Canada and the US.

Since then, the EU's membership has grown to twenty-seven with the most recent expansion to Bulgaria and Romania in 2007.

Since October 2007, separatists and Caucasus Front soldiers led by Dokka Umarov and Akhmed Yevloyev have claimed all of the North Caucasian regions from Karachay – Cherkessia to the Caspian Sea as part of their territory invaded by Russia during the 18th century that expelled most of the Caucasians towards Turkey, Bulgaria, Syria, and Jordan.

Since 1999, Bulgaria has been divided into 28 provinces (, oblasti ; singular област, oblast ; also translated as " region ") which correspond approximately to the 28 districts ( okrugs ) that existed before 1987.

Since, after having ultimately been banned from attending any public school in the country, he could not complete his education in Bulgaria, in September 1890 Rakovsky went to Geneva to begin his studies and become a physician.

Since then Sardica, which is now called Sophia, belongs to the national Church of Bulgaria.

Since its start in 1989, Buncher Leadership Training has conducted seminars in the former Soviet Union, the Baltic States, Poland, Germany, Former Yugoslavia, Romania, Hungary, and Bulgaria as well as India and Latin America.

Since the treaty was disadvantageous to defeated Bulgaria, Ionescu was allegedly the target of an assassination attempt ( reportedly foiled by an ethnic Aromanian ).