Civilization in China began at the Yellow River Valley.
The Pontiacs had the Native Americans under the chief Ottawa to attack the British force at Detroit. But they failed. Though that didn't stop them from trying again. So every Indian tribe for Lake Superior to the lower Mississippi for a joint campaign to eliminate the British.
The answer is C. It is not direct but is implied through the elastic clause
The U.S offered work, so mainly for cheap labor.
Cuz we r smarter. But idek