The idea of epicycles was introduced by which astronomer as an attempt to explain the retrograde motion of the planets in the geocentric universe model?

A. Brahe

B. Galileo

C. Ptolemy

D. Copernicus

Which are correct definitions for history? Choose all answers that are correct. a. a documented narrative of change over time b. the study of human behavior before records were kept c. the study of how people have used their environment d.

Country X and Country Y are trading partners. Both countries grow wheat and both countries produce smartphones. Country X has large open prairies and a temperate climate.

How did TR taft and wilson compare in their approaches to reform?

What was expected from the citizens of the polis? A. Encourage education for all B. Obey the city's laws C. Encourage everyone to become citizens D. Elect men to senate

How can early explorers best be described

Periodization divides history into: A. eras with a distinct start and end date. B. the stories of important leaders. C. abstract ideas that develop over time. D. categories of similar ideas.

A criticism of the American system of federalism is that it is: A) unresponsive when it is faced with a dangerous emergency situation B) excellent at dealing with emergencies yet inadequate in daily matters C) inefficient in responding to crises

What soviet leader's reforms led to the end of the cold war?

In light of amendment 6 a 1963 Supreme Court decision in Gideon v. Wainright specified

What reason was given for the U. S. invasion of Iraq in 2003