How did expanding the national territory increase sectional tensions in the united states?
1 northern and southern politicians disagreed as to whether congress had the authority to determine whether slavery would be allowed in new areas open to settlement.
2 people moving westward to settle had little in common with people in the original states. they also had completely different political concerns, such as transportation.
3 those living along borders often had greater social and economic connection to the neighboring countries. this complicated trade and land acquisition efforts. 4 early national leaders promoted western settlement for agriculture, which matched southern interests, but northerners wanted to expand manufacturing.