Examlex
Erythropoietin is released in response to low levels of__________ in the blood.
Linda Brown
A key figure in the landmark Supreme Court case Brown v. Board of Education, which challenged racial segregation in American public schools.
Railroad Tracks
The parallel steel rails laid on ties and ballast, on which trains run to transport people and goods.
Jacobo Arbenz Guzmán
The 25th President of Guatemala who is remembered for his progressive land reforms and was ousted in a coup orchestrated by the United States CIA in 1954.
KGB
The main security agency for the Soviet Union from 1954 until its collapse in 1991, responsible for intelligence gathering, internal security, and espionage activities.
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