How did the feudal system protect a lord as well as his peasants?

What best describes the transportation within cities in the early 1800s

What deadly disease cost many workers their lives before dr. william gorgas found a treatment?

Plz ive been stuck on this question forever. in 1753 george washington was sent on a mission to a. build a fort at the point where the allegheny and monongahela 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 river.