Examlex
Galileo's observations of the entire phase cycle of Venus proved that Ptolemy's epicyclescould not be correct in keeping Venus between us and the Sun.
American Farmer
Refers to a person engaged in agriculture in the United States, representing a key figure in the country's economic and cultural history.
Birthright Citizenship
The legal right to citizenship for all children born in a country's territory, regardless of their parents' nationality or status.
Naturalization Act
Legislation that establishes the process by which immigrants can become citizens of a country, often including requirements related to residency, good character, and knowledge of the country's language and laws.
Reconstruction Era
The Reconstruction Era refers to the period in United States history immediately following the Civil War, from 1865 to 1877, focused on rebuilding the Southern states and integrating formerly enslaved individuals into society.
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Q149: Two stars have the same absolute magnitude,