During the Carolingian epoch the custom grew up of granting these as regular heritable fiefs or benefices, and by the 10th century, before the great Cluniac reform, the system was firmly established.

During their heyday from the late 1970s to the mid-1990s, most BBSes were run as a hobby free of charge by the system operator ( or " SysOp "), while other BBSes charged their users a subscription fee for access, or were operated by a business as a means of supporting their customers.

During 1996, however, the economy collapsed due to an unstable and decentralised banking system, a wave of hyperinflation throughout several countries of Eastern Europe, and slow reforms, which led to an inflation rate of 311 % and the collapse of the lev.

During 1996, however, the economy collapsed due to the Bulgarian Socialist Party's slow and mismanaged economic reforms and an unstable and decentralised banking system, which led to an inflation rate of 311 % and the collapse of the lev.

During the Middle Bulgarian period, the language underwent dramatic changes, losing the Slavonic case system, but preserving the rich verb system ( while the development was exactly the opposite in other Slavic languages ) and developing a definite article.

During the rainy season, winds from the southwest push the moister maritime system north over the African continent where it meets and slips under the continental mass along a front called the " intertropical convergence zone ".

During this brief era, when China was in all respects a multi-state system, five regimes rapidly succeeded one another in control of the old Imperial heartland in northern China.

During WWII, an alpine team composed of Pierre Chevalier, Fernand Petzl, Charles Petit-Didier and others explored the Dent de Crolles cave system near Grenoble, France which became the deepest explored cave in the world (- 658m ) at that time.

During the early 20th century, a Caltech committee visited several universities and decided to transform the undergraduate housing system from regular fraternities to a house system.

During the Han Dynasty, Confucianism developed from an ethical system into a political ideology used to legitimize the rule of the political elites.

During early development of the vertebrate embryo, a longitudinal groove on the neural plate gradually deepens and the ridges on either side of the groove ( the neural folds ) become elevated, and ultimately meet, transforming the groove into a closed tube, the ectodermal wall of which forms the rudiment of the nervous system.

During the 1970s, a growing number of Canadian stations pushed American channels off the systems, forcing several to expand beyond the original 12-channel system configurations.

During the Middle Ages, there were various systems involving elections or assemblies, although often only involving a small amount of the population, the election of Gopala in Bengal region of Indian Subcontinent, the Polish-Lithuanian Commonwealth ( 10 % of population ), the Althing in Iceland, the Løgting in the Faeroe Islands, certain medieval Italian city-states such as Venice, the tuatha system in early medieval Ireland, the Veche in Novgorod and Pskov Republics of medieval Russia, Scandinavian Things, The States in Tirol and Switzerland and the autonomous merchant city of Sakai in the 16th century in Japan.

During an interview with NME Magazine, he shot and killed a squirrel with a pellet gun to prevent any further damage to his electrical system in the attic at the location the interview was held.

During this time, the distinction between kingship and godhood had not yet occurred, as the caste system had not yet been introduced.

During this work, entropy accumulates in the system, which then dissipates in the form of waste heat.

During 1897 the Baudot system was improved by switching to punched tape, which was prepared offline like the Morse tape used with the Wheatstone and Creed systems.

During 1874, French telegraph operator Louis Victor Mimault patented a telegraph system using five separate lines to transmit.

Fig. 1 During Steady-state ( chemical engineering ) | steady, continuous operation, an energy balance applied to an open system equates shaft work performed by the system to heat added plus net enthalpy added

During what is often referred to as the Islamic Golden Age, in order for a scholar to be qualified to issue a fatwā, it was required that he obtained an ijazat attadris wa ' l-ifta (" license to teach and issue legal opinions ") from a Madrassah in the medieval Islamic legal education system, which was developed by the 9th century during the formation of the Madh ' hab legal schools.

During this period, his visual style simplified ( owing in part to the constraints of the Hollywood studio system ) and his worldview became increasingly pessimistic, culminating in the cold, geometric style of his last American films, While the City Sleeps ( 1956 ) and Beyond a Reasonable Doubt ( 1956 ).

During his time in office, a number of important laws were implemented, such as those giving women access to the justice system, and, after the assassination of Walter Rathenau, the law for the protection of the republic.

During this precarious period of development the mother should continue to influence the growth of the child's conscience.

During his five years as an assistant director, Kurosawa worked under numerous directors, but by far the most important figure in his development was Kajiro Yamamoto.

During the 1670s corpuscularianism was used by Isaac Newton in his development of the corpuscular theory of light.

During development, engineers had made the decision to use the Zilog 8530 serial controller chip ( SCC ) instead of the lower cost and more common UART to provide serial port connections.

During this period significant analytical contributions to chemistry include the development of systematic elemental analysis by Justus von Liebig and systematized organic analysis based on the specific reactions of functional groups.

During the 19th century, the development of mines led to a new type of naval warfare.

During pregnancy, the breast is responsive to a complex interplay of hormones that cause tissue development and enlargement in order to produce milk.

During thelarche, the developing breasts sometimes are of unequal size, and usually the left breast is slightly larger ; said condition of asymmetry is transitory and statistically normal to female physical and sexual development.

During the 6x86's development, the majority of applications ( office software as well as games ) performed almost entirely integer operations.

During his time there, Doppler, along with Franz Unger, played an influential role in the development of young Gregor Mendel, known as the founding father of genetics, who was a student at the University of Vienna from 1851 to 1853.

During development in 1983, Amiga had exhausted venture capital and was desperate for more financing.

During the first century of development, the Spanish dominance was undisputed.

During development, the Palo Alto design team were working on a Unix-only workstation that originally included the PRISM.

During the development of radio, many scientists and inventors contributed to radio technology and electronics.

During the late 20th century, Fort Collins expanded rapidly to the south, adding new development, including several regional malls.

During the 1820s and 1830s, HBC trappers were deeply involved in the early exploration and development of Northern California.

During 1991, loan negotiations with multilateral and bilateral lending institutions brought Honduras US $ 39. 5 million in United States development assistance, US $ 70 million in balance-of-payments assistance in the form of cash grants, and US $ 18. 8 million in food aid.

During the initial development phases, Windows XP Professional x64 Edition was named Windows XP 64-Bit Edition for 64-Bit Extended Systems.

During development, it was found that the comparatively heavy rear-mounted engine moved the center of mass of the vehicle rearwards.

During fetal development, since bones and thus the bone marrow develop later, the liver functions as the main haematopoetic organ.

During development, Intel, HP, and industry analysts predicted that IA-64 would dominate in servers, workstations, and high-end desktops, and eventually supplant RISC and complex instruction set computer ( CISC ) architectures for all general-purpose applications.

During this initial period of development, the campus plan was established and six buildings were constructed.

During the development of radio, he also worked on wireless telegraphy.