Historians estimate the Alþing to have been established from 800 to 900.

Historians estimate his estate was worth about $ 1 million in 1799 dollars, equivalent to about $ 18 million in 2009 purchasing power.

Historians Keith Hopkins and Mary Beard tentatively estimate a total of 400 arenas throughout the Roman Empire at its greatest extent, with a combined total of 8, 000 deaths per annum from all causes, including execution, combat and accident.

Historians estimate that fewer than one million immigrants — perhaps as few as 400, 000 — crossed the Atlantic during the 17th and 18th centuries.

Historians estimate their total population may have been three to four times that number.

Historians estimate that, in the South in 1856, Fillmore retained 86 percent of the 1852 Whig voters.

Historians have used statistical techniques to estimate the party breakdown in Congress.

Historians estimate the total number who died due to Mao's persecution in all base areas to be approximately one hundred thousand.

Historians estimate about 2, 000 Cheyenne died, one-half to two-thirds of their population.

Historians estimate that the Pequot suffered the loss of 80 % of their population.

Historians estimate that the Pequot suffered the loss of 80 % of their entire population.

Historians estimate the number of Norman settlers at around 8, 000, but Norman in this instance includes not just natives of Normandy, but settlers from other parts of France.

Historians estimate that fully two per cent of the Chinese community was deported between 1923 and 1932, largely under the provisions of the Opium and Narcotics Drugs Act ( ONDA ).

Historians estimate that Provençal troops killed hundreds to thousands of residents there and in the nearby 22-28 villages which they destroyed.

Historians estimate that in the 1560s, more than half of the nobility were Calvinist ( or Huguenot ), and 1, 200 – 1, 250 Calvinist churches had been established, by 1562 with the outbreak of war, there were 2 million Calvinists.

Historians estimate that 2, 000 Huguenots were killed in Paris and thousands more in the provinces ; in all, perhaps 10, 000 people were killed.

Historians once thought the Iroquois Confederacy started in the 16th century, but a more recent estimate dates the confederacy and its constitution to between 1090 and 1150 CE.

Historians estimate that Cleisthenes was born c. 570 BC.

Historians estimate that up to half of Hungary's two million population at that time were victims of the Mongol invasion of Europe.

Historians estimate he brought in several thousand Chinese from China and many more thousand from California.

Historians John Thornton and Linda Heywood of Boston University estimate that 90 percent of those shipped to the New World were enslaved by Africans and then sold to European traders.

Historians estimate the encampment had some 1, 200 warriors out of the total 4, 800 population.

Historians have struggled to document the number of victims: some sources report up to 1, 830 victims ; others estimate 955 people killed.

Historians estimate, that an average peasant's hut did not last over 10 years.

Silvermintz notes that, " Historians of economic thought credit Plato, primarily on account of arguments advanced in his Republic, as an early proponent of the division of labor .” Notwithstanding this, Silvermintz argues that, " While Plato recognizes both the economic and political benefits of the division of labor, he ultimately critiques this form of economic arrangement insofar as it hinders the individual from ordering his own soul by cultivating acquisitive motives over prudence and reason.

Historians have traditionally blamed Rudolf's preoccupation with the arts, occult sciences, and other personal interests as the reason for the political disasters of his reign.

Historians disagree on the reason for this defeat.

Historians have also cited shortages of land and food as a reason for this migration, and political competition between Haynes and Winthrop.

Historians have thought that the reason St. Albert and St. Thomas responded to David at all was not so much out of fear of David's pantheism, but rather to defend Aristotle.

Historians have speculated that the divorce may have been related to Masamoto's poor health ( he died at a relatively young age ) or the fact they did not have any children, but the true reason is unknown.

Historians have had two reasons for persisting so long in their investigations.

Historians have therefore turned to public records for what details we know.

Historians consider this the decisive factor in convincing Alboin to undertake a migration, even though there are indications that before the war with the Gepids a decision was maturing to leave for Italy, a country thousands of Lombards had seen in the 550s when hired by the Byzantines to fight in the Gothic War.

Historians acknowledge his protection of popular democracy and individual liberty for United States citizens, and criticize him for his support for slavery and for his role in Indian removal.

Historians differ on which of them was responsible for which institution, and which of them most represented a truly democratic movement.

Historians including Donald Grinde, Bruce Johansen and others believe that the Iroquois constitution provided inspiration for the United States Constitution and in 1988 was recognised by a resolution in Congress.

Historians have proposed several names for the Age before Superman, most commonly dubbing it the Platinum Age.

Historians disagree over the extent of his responsibility for these events.

Historians have debated whether Hume posited a universal unchanging human nature, or allowed for evolution and development.

Historians have concluded that this assignment provided valuable preparation for handling the challenging personalities of Winston Churchill, George S. Patton, George Marshall and General Montgomery during World War II.

Subtitled From Romantic to Revolutionary, it was part of an effort by the Communist Party Historians ' Group, inspired by Torr, to emphasise the domestic roots of Marxism in Britain at a time when the Communist Party was under attack for always following the Moscow line.

Historians laud Washington for his selection and supervision of his generals, encouragement of morale and ability to hold together the army, coordination with the state governors and state militia units, relations with Congress and attention to supplies, logistics, and training.

Historians committed to a social science approach, however, have criticized the narrowness of narrative and its preference for anecdote over analysis, and its use of clever examples rather than statistically verified empirical regularities.

Historians agree that Hippocrates was born around the year 460 BC on the Greek island of Kos ( Cos ), and became a famous ambassador for medicine against the strong opposing infrastructure of Greece.

The Education of Historians for Twenty-first Century ( 2003 ) report by the Committee on Graduate Education of the American Historical Association

Historians like Serge Lancell have questioned the reliability of the figures for the number of troops he had when he left Hispania.

Historians like Donald Morris hold that his political genius laid the basis for a relatively light hegemony.

Historians have criticized Davis for being a much less effective war leader than his Union counterpart Abraham Lincoln, which they attribute to Davis being overbearing, controlling, and overly meddlesome, as well as being out of touch with public opinion, and lacking support from a political party ( since the Confederacy had no political parties ).

Historians have also examined his changing ideas on the proper role for black Africans.

Historians, and writers in different disciplines, have suggested various dates as starting points for modernism.

Historians praised him as a statesman of moderation and balance who kept the peace in Europe and was primarily responsible for the unification of modern Germany.