What was the main factor that kept people from farming for most of human history? * 10 points
A.) The existence of neanderthals
B.) People aren’t naturally inclined to settle down
C.) The Ice Age kept most of the earth very cold, and few plants/animals flourished
D.)The earth was too hot and desert-like for widespread farming

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.