The following of world war 2
Answer:
Scientists believe that Mashkan-shapir's collapse was caused in part by destruction of the fields by mineral salts. When mineral salts concentrate in the upper levels of the soil, it becomes poisonous for plants. In Mesopotamia, irrigation was essential for crop production.\
It was the first election to have two presidential nominees. It also was the only election where the president and the vice president were elected from opposite parties.
He was 56 years old when he died