HOW LONG IS AN ERA???

What was the most important consequence of the large-scale ecological changes in africa two hundred thousand years ago?

The telegraph, the transatlantic telegraph cable, and the telephone were important to businesses after 1850 because of a. they created a system for developing new inventions. b. they filled a need that other inventions of the day could not. c. they attracted investors and created the stock market. d. they made picture-taking a popular american pastime.

The clergy comprised the wealthy first estate with members of noble descent in particular having a great deal of power.what was the source of the clergy’s wealth