the answer is a microscope .
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Nuclear fear led to a new market for fallout shelters. Home economics classes taught girls how to stock such a shelter with food and supplies in the event of a nuclear attack. The government created official films on shelters, praising their value and advising homeowners on how to use them.
The patriots didn’t have a navy to challenge the Royal Navy.
Then they asked the French King Loui XVI for help and the French navy was able ti challenge the Roayal Navy
A factor that led to the growth of the factory system in the United States was the development of new power sources, it's true.
Legislation addressed child care need for working women
