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A root growing into the Earth is exhibiting negative gravitropism.
1790 Naturalization Act
The first law in the United States to establish a national framework for the naturalization of foreign citizens, which limited this process to "free white persons."
Open Immigration
American immigration laws under which nearly all white people could immigrate to the United States and become naturalized citizens.
Thomas Jefferson
A Founding Father of America, the main writer of the Declaration of Independence in 1776, and served as the third President of the United States from 1801 to 1809.
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