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The Chandrasekhar limit of stellar mass (below which a star will collapse into a white dwarf) is, if the mass of our Sun is M, about
Brown V. Board
The 1954 Supreme Court case, Brown v. Board of Education, that declared state laws establishing separate public schools for black and white students unconstitutional.
Federal System
A form of government in which power is divided between a central authority and constituent political units, such as states or provinces, allowing each to maintain certain powers independently.
Declining Significance
A concept that suggests the decreasing impact or importance of a particular factor or phenomenon over time.
Civil Rights Leaders
Individuals who lead movements and efforts to end discrimination and ensure equal rights under the law for all people, particularly minorities.
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