Answer:
After some members of Congress asked to see the diplomats' reports regarding what had transpired in France, Adams handed them over with the names of the French agents replaced with the letters X, Y and Z; thus the name XYZ Affair.
An informal deal was struck to resolve the dispute: the Compromise of 1877, which awarded all 20 electoral votes to Hayes; in return for the Democrats' acquiescence to Hayes' election, the Republicans agreed to withdraw federal troops from the South, ending Reconstruction.
C) She over saw the conquest of Korea.
answer : foreign infectious deceases, like small pox
Explanation:
to quote some artical i found when looking uo a proper answer to this, "By far the most drastic upheavals were caused by invisible invaders, the foreign bacteria introduced from the Old World. Native populations cut off from Europe, Africa, and Asia for millennia were utterly without immunity to smallpox, measles, and other ailments the newcomers unwittingly brought across the seas. "
I belive it is Britain and France I not sure