Who ruled china before the start of the ming dynasty?

How did southern slaveholders attempt to convince people in the north to support slavery?

Plz me in 1756 george washington was sent on a mission to, a. build a fort at the point where the allegheny and monogahela rivers form the ohio river. b. attack the french at fort duquesne. c. attack the french at fort neccessity. d. deliver a message to the french demanding that they leave the ohio valley.

Wha industry did the refrigerated rail car impact the most