Why did Bismarck form the Triple Alliance?

to prevent Germany from attacking France
to increase Germany's defense against France
to protect Germany from attacks by Russia

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.

the answer to your question is

the treaty of hopewell