Q: A single soldier arriving in Mexico in 1520 was carrying smallpox and thus initiated the devastating plagues that swept through the native populations of the Americas. The European diseases that ravaged the indigenous inhabitants of the Americas also severely affected the various Maya groups of Petén. It is estimated that there were approximately 30,000 Ch'ol and Ch'olti' Maya in western Petén at the start of the 16th century. Between 1559 and 1721 they were devastated by a combination of disease, war and enforced relocations. When Nojpetén fell in 1696 there were approximately 60,000 Maya living around Lake Petén Itzá, including a considerable number of refugees from other areas. It is estimated that 88% of the inhabitants died during the first decade of colonial rule because of disease and war. Although disease was responsible for the majority of deaths, internecine warfare between rival Maya groups and Spanish expeditions also took their toll.
How many people  initiated the devastating plagues?
A: 1

Q: Arcatas age cohorts are also distorted by a large percentage of college-age students. Only 15.3% of Arcata residents are under the age of 18, while nearly a third (32.3%) fall between ages 18 and 24, and 27.8% are 25 to 44 years old. Among older age cohorts, 15.9% are 45 to 64 years old, and 8.7% were 65 years of age or older. The median age was 26 years. For every 100 females, there were 99.0 males. For every 100 females age 18 and over, there were 96.9 males.
Which age group is smaller: 25 to 44 or 45 to 64?
A: 45 to 64

Q: Saint George's Night Uprising in 1343-1345  was an unsuccessful attempt by the indigenous Estonian population in the Duchy of Estonia, the Bishopric of Ösel-Wiek, and the insular territories of the State of the Teutonic Order to rid themselves of the Danish and German rulers and landlords, who had conquered the country in the 13th century during the Livonian crusade, and to eradicate the non-indigenous Christian religion. After initial success the revolt was ended by the invasion of the Teutonic Order. In 1346 the Duchy of Estonia was sold for 19,000 Köln marks by the King of Denmark to the Teutonic Order. The shift of sovereignty from Denmark to the State of the Teutonic Order took place on November 1, 1346.
How many years did Saint George's Night Uprising take place?
A: 2

Q: Over the centuries, Weimar remained a small town of less than 5,000 inhabitants. When it became the capital of Saxe-Weimar in 1572, population growth was stimulated and population increased from 3,000 in 1650 to 6,000 in 1750. Around the year 1800, Weimar had 7,000 inhabitants. Their number grew constantly over the years to 13,000 in 1850, 28,000 in 1900 and 35,000 at the beginning of World War I. During the interwar period, the new capital of Thuringia saw a population boom, which led to 65,000 inhabitants in 1940. Since that time, the population levels have stagnated. The years 2009 to 2012 brought a moderate growth of approximately 0.35% p. a., whereas the population in bordering rural regions is shrinking with accelerating tendency. Suburbanization played only a small role in Weimar. It occurred after the reunification for a short time in the 1990s, but most of the suburban areas were situated within the administrative city borders.
How many years did it take for the population of Saxe-Weimar to increase by 1000 inhabitants from the year 1750?
A:
50