Why did westward expansion lead to increased tension over slavery in the us?

Which is an example of a country that is overly dependent on another country for goods and sevices

What were the effects of the great reform act of 1832?

What is the significance of the battle of saratoga? a. the defeat at saratoga allowed the british to invade new england by land. b. after the defeat at saratoga france refuse to sign a treaty with the united states. c. the british won a decisive victory at saratoga. d. after the victory at saratoga france gave open support to the united states including arms money and ships.