2. Why did immigration from China and Japan increase in the late 1800s?

The California Gold Rush.

Explanation:

In 1848, gold was found by James Marshall at Sutter's Mill in Coloma, California. The news spread quickly and caused increased immigration. 300,000 people came to California to try their luck at the gold. Many of those people were from China and Japan. They immigrated to the United States mainly for the gold, but not everyone found some.

the answer is option a.

the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.