Mechanical reaper

Cotton gin

Combine harvester

Which sector of the American economy was revolutionized by these technological breakthroughs?

A) agriculture

B) communications

C) manufacturing

D) transportation

Who was Muhammad and what did he do?

Why does a researcher use primary source instead of a secondary source when analyzing a historical event.?

Why did the Iroquois fight the Huron during the colonial period

What is the name of the new way of thinking about the natural world based on careful observation and a willingness to question accepted beliefs

When President Clinton was elected to a second term in 1996? A) Republicans maintained control of congress B) Democrats took over the House and Senate C) Voters overwhelmingly favored the Democrats. D) voters blamed the Republicans for the economy.

When was Zheng he's most important accomplishment

What did the issue of voting lead to another constitutional amendment in the late 1800s

Which of the following was a rebellious group who tested traditional norms? A. youth culture of the 1920s B. Progressives C. Fundamentalists D. none of the above

These lines from President Obama's speech show a President's role as

What ancient Mesoamerican civilization were known for large stone monuments? a. the Aztec b. the Olmec c. the Maya d. the Inca