Why was the end of the 19th century know as the "Age of Imperialism"? A African countries aggressively expanded their empires in United States
B European countries aggressively expanded their empires in Asia and Europe
C African countries aggressively expanded their empires in Asia and Africa
D European countries aggressively expanded their empires in Asia and Africa

It came into use after 1850. It was a new kind of European expansion which was not marked by widespread settlement. Its objective was to control territories for political and economic reasons and for national prestige. The late 19th century is often called the Age of Imperialism

answer: this problem has only trivial solutions, with all points on the same line. x=5 or x=7/5.

step-by-step explanation:

there are three triangles, and three unknowns: x, y=length of middle segment, and z=cos(angles marked with red arc).

we need

and law of cosines,

the three equations are

see attached image for solution.

a.) are both appointed for life