What invention to keep slavery profitable in the south? a. cotton gin b. canals c. telegraph d. steam engine

What do the discoveries of shells used in jewelry and a huge dredged canal tell us about the indus valley civilization?

The articles of confederation allowed congress to: make and borrow money. declare war. create a postal service. all of these choices are correct.

Which kind of map you would be used to show population density in the countries of the world