Why were southerners so eager for expansion of America?

The U.S. was eager to keep slave and free states at an equilibrium during compromises such as the Missouri Compromise and the Compromise of 1850 to appease both sides.

Explanation:

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the answer is either c or d i think its d

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.