What did the states realize after the War of 1812?

In the months following the U.S. declaration of war, American forces launched a three-point invasion of Canada, all of which were repulsed. ... At sea, however, the United States was more successful, and the USS Constitution and other American frigates won a series of victories over British warships.

Explanation:

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hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.