Answer: 1492
Explanation: The Christian Kingdoms of Castile and Aragon conquer the Emirate of Granada, ending nearly 800 years of Muslim rule in the south and founding modern Spain as a united state.
Answer:
cotton gin helped improve the crop production
It lead to the holocaust and the death of many Russian citizens
Http://www.theworldeconomy.org/impact/Portugal_s_major_advantages.html This should answer your question