What french mathematician built and sold the first gear-driven mechanical machine that did addition and subtraction?

How does the Sahara compare in size to the continental United States?

What is the first step in adding an amendment to the U. S. Constitution? The amendment is sent to the state legislatures by the president. The amendment is voted upon by the voters of the United States.

Who the Persian king A. Xerxes B. Alexander The Great C. Pericles D. Leonidas

Patron family of the renaissance

American colonists organized the first continental congress to?

What ways did the gold rush affect California

What is another name for biosphere

France had to give up its vision of a north american new france when a. its fishing industry faltered. b. farming proved to be unprofitable. c. king louis xiv died. d. it was defeated by the british in 1713 and 1763. e.

3) this type of museum collects & re-erects old buildings at large outdoor sites, usually in setting of re-created landscapes of the past,

What was The main contribution of the Austrians in the time period from 1500 to 1800 was: