Which of these postclassical empires covered the largest graphic territory

Jane determines x = 4 and y = 1 is the solution to the following system of equations.

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.

Which industries produced great profits and wealth in the late 1800s