Which of the following were reasons that China closed its doors to the rest of the world? (Mark all that are true) Fleets of ships collected tributes from territories.
Fighting the Mongols in the North was too expensive.
Japanese pirates were attacking Chinese ships.
Confucian values taught not to pursue anything abroad.

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

- "a new era of american politics began with jackson's election in 1828, but it also completed a grand social experiment begun by the american revolution. nevertheless, jacksonian democracy represented a provocative blending of the best and worst qualities of american society."

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yes.

explanation:

because it let the japanese know who had the upper hand in the war.

i just answered it

explanation: