The Lewis and Clark Expedition provided the first accurate maps of which areas? Check all that apply. the Pacific Ocean
the Rocky Mountains
O the Appalachian Mountains
the Columbia River
the Missouri River
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Is the weather changing? consider the data of severe weather that includes tornadoes occurring throughout the u. s. over the last four years. compare the severe weather for the last three years. then compare the first three months of 2017 with that data. based on previous years, what might the prediction be for weather during 2017?

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.

Which of the following is/are a major technological advances of the mayan civilization? a. the calendar c. math b. architecture d. all of the above