How did the Shang dynasty gain control of the Yellow River valley?
They invaded the valley and defeated the former rulers.
They befriended the people and became their political leaders.
They used irrigation to manage water and gain control over the people.
They took over the farms of the people who lived there and forced them to leave.

- "the most famous structure by far at saqqara is djoser's step pyramid. dating from the 3rd dynasty (2667—2448 bc), it was the first all-stone complex ever built on earth."

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it allows shippers to carry commercial goods, which allows them to save time and money.

i think the answer is: cuba wanted to be independent from spain, and the u.s. wanted to end spanish rule in the west.

hope i

-lavira : )