Who invented a piston-driven steam engine that could power all kinds of industrial machinery

The map shows information about river valley civilizations. which feature of this map best the reader determine the distance between two places?

Why did einstein write a letter to president roosevelt

Which statements describe how reformers fought for social change in the progressive era? check all that apply. 1. they founded a state university to promote industrialization. 2. they began a civil rights movement to promote equality between races. 3. they made it legal to manufacture and sell alcohol. 4. they built thousands of new schools and required attendance. 5. they promoted abstinence from alcohol and supported prohibition.