Why Were the Modern-Day Countries of Mexico and Peru Originally

Multiple Choice

Why were the modern-day countries of Mexico and Peru originally Spain's most significant conquests?

A) Indian agricultural techniques made Spanish farming much more productive.
B) The Aztecs' knowledge of iron and steel production contributed to Spain's armory.
C) The Inca,Aztecs,and Mayans had great wealth,particularly in gold.
D) They provided hospitable environments for colonies that attracted Spanish families.