Explain the economic and political causes in the rise of sectional tensions from 1848 to 1860 that would eventually lead to secession by some Southern states.

The sectional crisis among the southern and the northern states was how to incorporate vast territories in the nation and whether states would be slave or non slave.

Explanation:

From the time of 1848 to 1860, there were sectional crisis in the United States of America. The problem was how to inculcate vast territories in the nation after the end of the American Mexican war. Moreover the political tension was that whether the states would be slave or non slave.

The southern states favored the slavery as a fact of life while the northern states were against slavery and wanted better and equal lifestyle for the slaves also. Moreover the northern states were rich and the southern were poor and had lesser number of factories compared to north.