Select the african civilizations. mali assyria hindu congo aksum hittite aryan kush luba nubia lydia sumeria

During the 1750s, before the industrial revolution, why did most people see little of the world?

The book by john kenneth galbraith discussed the growing gap between the increasing private wealth in the u. s. and the stagnant condition of resources allocated to the public sector.

What is the difference between an independent and a dependent variable?