Question

what was the key issue that was debated each time a new state was admitted to the union before the civil war?
support for the homesteading
the expansion of slavery
the provision of women’s suffrage
the building of railroads

Explanation:

Before the Civil War, the key debate when admitting new states was whether slavery would be allowed there. This was crucial to maintaining the balance between free and slave states. Homesteading, women’s suffrage, and railroad building were not the central pre - Civil War state - admission debate issues. The expansion of slavery directly relates to the sectional tensions and the balance of power between the North and the South regarding slave and free states.

Answer:

B. the expansion of slavery