By 1991 the country was completely transformed into a modern industrialized state.

By 1991 the communist governments of Bulgaria, Czechoslovakia, East Germany, Hungary, Poland and Romania, all of which had been imposed after World War II, were brought down as revolution swept Eastern Europe.

By 1991 there were enough African Esperantists to warrant a pan-African congress.

By 1991, it was relatively easy to produce gram-sized samples of fullerene powder using the techniques of Donald Huffman, Wolfgang Krätschmer and Konstantinos Fostiropoulos.

By 1991 President Callejas had achieved modest success in controlling inflation.

By 1991 the public-sector deficit was entirely financed with net external credit.

* Passing By: Selected Essays, 1962 – 1991 ( 1992 )

By summer 1991, Dahmer was murdering approximately one person each week.

By 1991, Bacon began to give up the idea of playing leading men in big-budget films and to remake himself as a character actor.

By 1991, it appeared to many that SGML would be limited to commercial and data-based applications while WYSIWYG tools ( which stored documents in proprietary binary formats ) would suffice for other document processing applications.

By the end of 1991, however, two years before the termination of the plan, no quantitative plan targets had been made public, an indication that the plan has not fared well.

By November 1990, only four months later, the 5th Battalion had deployed and in early 1991 the 21st Guards Battalion had also been formed, four staff courses had been run, support weapons and logistics training was well advanced ( indeed a logistics battalion deployed as early as July 1990 ) and an operational test exercise had been conducted.

By 1991, economic and political turmoil were beginning to boil over, as the Baltic republics chose to secede from the Union.

In the US, the new novels Moscow Club ( 1991 ) by Joseph Finder, Masquerade ( 1996 ) by Gayle Lynds, and The Unlikely Spy ( 1996 ) by Daniel Silva, and in the UK, A Spy By Nature ( 2001 ) by Charles Cumming and Remembrance Day ( 2000 ) by Henry Porter, maintained the spy novel in the post – Cold War world.

By 1991, the Shining Path had control of much of the countryside of the center and south of Peru and had a large presence in the outskirts of Lima.

By the 1991 season, the Cowboys finished with an 11-5 record and made the playoffs for the first time in six years.

By December 1991, that Association had received reports of 60 common graves and had investigated 15 of them.

By 1991 heavy use of mineral fertilizers and agricultural chemicals was a major cause of pollution in the republic.

By 1991 Microsoft added TrueType into the Windows 3. 1 operating system.

By coincidence, the last palindrome year ( 1991 ) was also a common year starting on Tuesday.

By 1991, the newly formed band had signed a recording contract with Virgin Records and enlisted the help of several drummers / percussionists ( Jim Keltner, Michael Urbano and Phil Jones ), issuing their first album, Cracker, in 1992.

By the end of the decade, Hughes ' realised his ongoing drug problem was derailing him, and by 1991 a clean, sober and fully rejuvenated Hughes returned with the vocal for the hit " America: What Time Is Love?

By 1991, Sesame Street and its songwriters had received eight Grammys.

By 1991, US arcade video game revenues had fallen to $ 2. 1 billion.

By the beginning of 1991, the government controlled only 10 percent of Afghanistan, the eleven year Siege of Khost had ended in a mujahideen victory and the morale of the Afghan military finally collapsed.

By failing to do as he was told instantly -- to take out a permit or return the gun to his car -- he had played into Lord's hands.

By 1898, rustling losses had been driven down to the lowest level ever seen in Wyoming.

By the death of his father in 1888 he had come into possession of the family estate and had re-assumed its traditions.

By the time Lilian had been graduated from public school, her parents were doing quite well.

) By the time the streetcar pulled away, he had fallen in love with Paula.

By this time she had learned that it was futile to argue with her young husband, yet the uncomfortable fact remained: the American Congregationalists were sending them as missionaries to the Far East and paying their salaries.

By the age of six young Johnny indicated that he had the call.

By September 1940 the Suite had developed into a collection of six songs, `` four spirituals, a dream, and a lullaby ''.

By now he had become Regius Professor of Modern History at Cambridge and had been honored by the award of the Order of Merit.

By both standards Thomas had the right to be proud.

By June 19, 1788, he had presented himself to its Commander in Chief, the Governor of the Southern Provinces, the Director of the War College -- The Prince.

By 1783 her legions had managed to annex the Crimea amid scenes of wanton cruelty and now, in this second combat with the Crescent, were aiming at suzerainty over all of the Black Sea's northern shoreline.

By this time word had got around that an American doctor was on the premises.

By this time Woodruff had accurately measured Pike as a man of great personal pride, a man who would fly into a towering rage if his integrity were questioned, and who would be anxious to avenge himself.

By 1834 the art of oratory had reached a very high level in the United States as a literary form.

By the time he was under the covers he had forgotten about seeing Kate.

By 1937 he had clarified his intentions to serve his people: `` I have striven for clarity and melodious idiom, but at the same time I have by no means attempted to restrict myself to the accepted methods of harmony and melody.

By the time the film was released we were three million dollars over-spent, war was imminent and the public apparently had forgotten all about Mother Cabrini.

By this time Churchill was not so cordial toward moving Poland westward as he had been at Teheran, where he and Eden had both heartily approved the idea.

By December, 1958, when ' Abdallah Ibrahim became President of the Council, elections had even greater importance.

By 800 social and cultural security had been achieved, at least on a simple plane ; ;

By this time large numbers of the audience had left the hall.