the dramatic population explosion that occurred in europe and around the world in the 1600s is most attributed to the
a.
introduction of high-calorie crops from the americas
b.
invention of the steel plow
c.
utilization of animals in the fields for labor
d.
development of agriculture

Which statement is an accurate description of life in mongolia in recent years? the majority of the population now lives in cities. after a brief period of democracy, communists regained control of the government. subsistence farming remains the primary economic activity in the country. relations between mongolia and china are now tense. -gradpoint