Geology and Natural Resources The Blue Ridge Mountains are the result of processes that began about
fifty million
years ago.

A great collision between two
continents
caused rocks to pile up and form mountains.

Over time,
erosion
has carved away much of the area’s mountains.

Today,
coal mines
make up almost all of the land in the region.

a.. a conflict between her competing identities.. apex

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.