The inca civilization develop​

The Inca first appeared in the Andes region during the 12th century, the Inca began expanding their land holdings by the reign of their fourth emperor, Mayta Capac. The Inca began expanding their land holdings by the reign of their fourth emperor, Mayta Capac.

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. because the u.s. was the leading with the most technology, economy, etc. also was teamed with other allies witch boosted the economy and materials to improve technology and use it.