1. What did James Buchanan promise to do?
end the agitation over the issue of slavery
abolish slavery in all states of the Union
support slavery to avoid a civil war
oppose slavery in the western territories

End the agitation over the issue of slavery

Explanation:

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nuclear fission produces the atomic bomb, a weapon of mass destruction that uses power released by the splitting of atomic nuclei the fighting in iwo jima and okinawa affected the allies' pacific strategy because truman decided to drop the atomic bomb on mainland japan.

the answer is b. you