Answer:
He demanded their removal and also announced a naval blockade of Cuba to prevent the Soviets from installing more missiles.
Slavery was why the north and south were fighting, so it would be slavery
Explanation:
Rare property of obsidian that is advantageous to archaeologists is that it occurs in volcanic flows that are remarkably homogeneous in chemical composition within a flow, but preserve elemental signatures that are unique to volcanic centers, and in some cases individual flows.
