Which accomplishment listed in this chart do think had the most dramatic impact on the modern world, and why? Explain.

the ampulishment would be diffrent

Explanation:

the answer is b.2008 and 2012 were presidential election years.

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.