Develop complex societies.
I believe the answer is D) Tuberculosis - Hope it helps! If It is wrong, Im truly sorry. :D
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There is the Executive, Legislative, and Judicial. Those are the three branches :)
It resulted in deaths of millions ranging from 75-200 million people. About 30% of Europe's population.
Grain is used to feed cattle and livestock because it is healthy, cheap, ethical, and easy to grow in some American climates. Grain is the easiest and most cost-efficient way to feed livestock.
