A military action the added territory in the United States in 1848 was the Treaty of Guadalupe Hidalgo. It ended the Mexican-American war and added the territories California, Arizona, Colorado, New Mexico, Nevada, Utah, and Wyoming.
Answer:
The first Haitorei of 1870 prohibited farmers or merchants from wearing swords and dressing like samurai.
Explanation:
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The answer is A. Ending the institution of slavery.
Because it was the largest generation born in US history.