Is lingua franca a popular or folk culture

What is the main social system that existed in ancient china?

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.

Louisiana purchase timeline can someone give me the answers, it's due tomorrow.