President Obama signed an order to close the Guantanamo prison due to alleged abuses and use of torture.
Because the Aztecs wanted to be able to plant crops on rich soil found in lake beds
The correct answer is d. Medical technology was used to treat malaria. Malaria was rampant in the tropical regions and the Europeans conquering these regions had challenges combating the disease. The colonists and locals had a form of treatment before identifying the cause of the disease. The isolated and used quinine to treat the illness.
