Answer:
Abraham Lincoln signs the Emancipation Proclamation
Explanation:
The proclamation declared "that all persons held as slaves" within the rebellious states "are, and henceforward shall be free."
It would be c the formation of alliances with neighboring empires
Answer:
C. People from America, Europe, and Asia migrated to the region.
Explanation:
The state of Pennsylvania is under the Third circuit
The first one is -5^4 but I don't think you can express the rest with exponents
