What is one major problem that has resulted from globalization in the 20th and 21st centuries

diseases are able to spread around the world more quickly. Globalization has reached a point that the problems of one country are likely to affect the whole world.

D) disease pandemics have become more difficult to contain in a single region  (apex)

pls be more elaborate

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.