<span>"Who was the president, until when government" is the translation, please verify your question and i will try to help you</span>
Answer:B) abolished slavery forever
Explanation:
The answer is the Gadsden purchase
Mesopotamia's rivers (Tigris and Euphrates) are key to their civilization.
Because of the rivers Sumerians (Mesopotamia's people) could trade and travel through them.
Not to mention just plain drinking water.
Another benefit of the rivers was irrigation.
