Which Chinese empire opened the Silk Road? How did the empire do it

How did the instition of slavery continue to affect the world even after it was abolished?

If one thinks illegal immigrants should become american citizens, should they become american citizens automatically or should there be a waiting period?

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.