How is government and social contract connected

The fourteenth amendment how did the action resolve a longstanding conflict in post-civil war america? it defined the process for readmittance of the former confederate states into the united states of america. it ensured the right to vote to all male citizens of the united states, regardless of race, color, or prior servitude. it defined citizenship and related rights for african americans. it abolished slavery in the united states.

Before world war 1 started, austria-hungry was wary of (spain or serbia) because of border disputes

How did mesopotamia become a center of trade