Summarize why the history of China is sometimes difficult to determine.

PLEASE HURRY!!!

Brainliestttme : )how did the japanese economy recover so quickly after world war ii? -mass immigration to japan in an effort to rebuild -economic and educational reforms passed by the government- an economic partnership with korea and china- marshall plan dollars stimulated the japanese economy

During wwi, literacy tests were used to control immigration, which marked a return of what type of ideology in some americans?

In what way did expansion and global trade during the 15th to 18th centuries affect the economies of european countries?