Before, the pro-slavery forces had to struggle to impose a gag before the anti-slavery forces got the floor.

Taken prisoner by pro-slavery forces, he was sentenced to be hanged but escaped.

Congress had long struggled to balance the interests of pro-slavery forces and anti-slavery forces.

The pro-slavery forces won the election.

He viewed the annexation of Texas as a vehicle by which to strengthen the pro-slavery forces.

By 1860 the pro-slavery forces were in control-but Kansas had only two slaves.

He stood up to pro-slavery forces and led lonely fights against parliamentary maneuvers to silence critics of slavery.

The battle lines were drawn between abolitionists coming in from the East and pro-slavery forces in Missouri.

The city's early days were filled with violence, as pro-slavery forces from nearby Missouri often clashed with local abolitionists.

Residents of this old frontier town, once the western outpost of pro-slavery forces, awoke today with a black Mayor-elect, their first in history.