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 making inroads in the name of law enforcement into the protection which Congress has afforded to the marriage relationship, the Court today continues in the path charted by the recent decision in Wyatt v. United States, 362 U.S. 525, where the Court held that, under the circumstances of that case, a wife could be compelled to testify against her husband over her objection.

By this marriage, he had one son, Prince Sadruddin Aga Khan, in 1933-2003.

By his marriage with Irene Doukaina, Alexios I had the following children:

By his marriage to Euphrosyne Doukaina Kamatera Alexios had three daughters:

By Otto's marriage to Eilika, daughter of Magnus, Duke of Saxony, the Ascanians became heirs to half of the property of the House of Billung, former dukes of Saxony.

By the summer of 1912 Heelis had proposed marriage and Beatrix had accepted, although she did not immediately tell her parents who once again disapproved because Heelis was only a country solicitor.

By 1525 Henry was infatuated with his mistress Anne Boleyn and dissatisfied that his marriage to Catherine had produced no surviving sons, leaving their daughter, the future Mary I of England, as heiress presumptive at a time when there was no established precedent for a woman on the throne.

By most accounts Allen's marriage was an unhappy one.

By late 1166, and the birth of her final child, however, Henry's notorious affair with Rosamund Clifford had become known, and her marriage to Henry appears to have become terminally strained.

By the autumn of 1559 several foreign suitors were vying for Elizabeth's hand ; their impatient envoys engaged in ever more scandalous talk and reported that a marriage with her favourite was not welcome in England: " There is not a man who does not cry out on him and her with indignation ... she will marry none but the favoured Robert ".

By 1569, relations with the Habsburgs had deteriorated, and Elizabeth considered marriage to two French Valois princes in turn, first Henry, Duke of Anjou, and later, from 1572 to 1581, his brother Francis, Duke of Anjou, formerly Duke of Alençon.

By 1939 her marriage to Pollock was in difficulties, and she began a series of affairs.

By now, the king was convinced that his marriage was hexed, and having already found a new queen, Jane Seymour, he put Anne in the Tower of London on charges of witchcraft.

By this time, however, she had renewed her relationship with Holt and her marriage to Fell ended soon after the twins ' birth.

Following his marriage Albéniz settled in Madrid and produced a quantity of music in a relatively short period. By 1886 he had written over 50 piano pieces.

By December the marriage to Upshaw had dissolved and he left.

By his marriage with a Francesca Orsini of Monterotondo was born Gentile Virginio Orsini, one of the most relevant figures of Italian politics in the late 15th century.

By marriage, he obtained the title of count of Gravina.

By the time of his marriage, the condition was very severe.

By this marriage, he became the brother-in-law of the future Henry II, Holy Roman Emperor.

By the time Henry conducted another Protestant marriage with his final wife Catherine Parr in 1543, the old Roman Catholic advisers, including the powerful third Duke of Norfolk had lost all their power and influence.

By contrast in 21st century Britain, nearly half of all children are born outside marriage, and nine in ten newlyweds have been cohabitating.

By contrast, Buddhism does not encourage or discourage marriage, although it does teach how one might live a happily married life and emphasizes that marital vows are not to be taken lightly.

By the time of his marriage, William was able to arrange the appointments of his supporters as bishops and abbots in the Norman church.

By 2010, same-sex marriage was legal and performed in 10 countries worldwide, although only in some jurisdictions in Mexico and the United States.