He was a South Carolina Politician and Vice President under John Quincy Adams and Andrew Jackson. He was a spokesperson for slavery, nullification and states rights

john c. calhoun

Explanation:

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the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.

geography

this is because warmer climates often don't get people sick from the flu and regions where it was often colder more people received the flu. hope this if you need more reasoning i am here to