Examlex
Find the vertex of the parabola.
Boll Weevil
A beetle that feeds on cotton buds and flowers, historically causing massive damage to the cotton industry.
Immigration
The action of coming to live permanently in a foreign country, often for work, family reunion, or as a refuge from conflict or persecution.
Dust Bowl
A period of severe dust storms during the 1930s, causing significant ecological and agricultural damage to American and Canadian prairies.
Black Soldiers
African American military personnel who have served in the various conflicts throughout US history, often facing segregation.
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