If there are nearly 4,000,000 slaves in the united states, why did only 100,000 escape along the railroad?

Slavery was a very repressive system. Escaping from slavery was very difficult and the Underground Railroad could accommodate only so many people.

Explanation: Enslaved people were considered valuable property, so owners took precautions and prevented runaways as much as possible

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.