Muslim scholars were very skilled in the field of astronomy and developed a calendar that was quite accurate. which of the following was one of the reasons that the muslims needed an accurate calendar?
a.
to keep track of sporting events
b.
to keep track of religious observances
c.
to keep track of business transactions
d.
to keep track of weather patterns

People from which group were tried for murder following the haymarket riot?

Which of the following led to a continuation of the treatment in the excerpt above? a)the brutality of the trans-atlantic african slave trade. b)spanish repression after violent native uprisings in new spain during the 16th century. c)european competition to quickly establish colonial holdings in the new world. d)the reliance of the spanish on native americans to provide labor under the encomienda system.

Which of these played the biggest role in increased urbanization in the late 1800s? a) transportation improved b) the military was stronger c) no one was farming anymore d) steam power was discovered