What were the four sources stated on how we learn about history?

There are two main types of historical sources: primary sources and secondary sources. A primary source is something that originates from the past

the central bank of the united states.

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.