Answer:
In 1889 he became irrigation commissioner for dona ana county
Explanation:
I do believe it would be B. Theodore Roosevelt. <span />
Australopithecines first appeared on Earth
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.