A.the national search for a route to Washington State

 B.the belief that all slaves should be freed immediately

C.the belief that America was meant to extend to the Pacific Ocean

D.the desire for free land in the West for settlers

A.the idea that the people of Texas had the right to join the United States

 B.the idea that Americans wanted slavery to confined to the South

C.the idea that citizens of each territory should decide whether to allow slavery there

D.the idea that Congress had the right to determine whether a territory would allow slavery

A.Lincoln's ability to win Southern voters

 B.the division in the Democratic Party between North and South

C.the Dred Scott decision

D.the repeal of the Kansas-Nebraska Act