At the end of the 1800s, the united states was unable to expand trade with china because
a. japan controlled most of china.
b. japan and other imperialist nations controlled china.
c. japan blocked us ships from reaching pacific ports.
d. japan and anti-imperialists in the us government blocked trade with china.

short answer b

Explanation:

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

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disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.