An act that removed Indian land from tribal possession, redivided it, and distributed it among individual Indian families. Designed to break tribal mentalities by giving Native American males 160 acres to farm and also set up schools to make Native American children more like other Americans

Dawes Act of 1887.

Explanation:

The Dawes Act or the General Allotment Act of 1887 was a federal law that proposes to disintegrate Indian lands and try to incorporate "American" ways of life. Signed into law by US President Grover Cleveland on January 8, 1887, the law removed Indian lands from their possessions, re-divided them, and redistributed them.

This Act led to the 'destruction' of the community feeling of the tribals. It propagates individualism, dividing all Indian properties, and promotes individual development contrary to the traditional Indian feeling of a community. It also gave Indian families individual rights to farm on 160 acres of land, set up schools in the hope to "Americanize" them.  

separate but equal was a legal doctrine in united states constitutional law according to which racial segregation did not violate the fourteenth amendment to the united states constitution, which guaranteed "equal protection" under the law to all people. under the doctrine, as long as the facilities provided to each race were equal, state and local governments could require that services, facilities, public accommodations, housing, medical care, education, employment, and transportation be segregated by race, which was already the case throughout the states of the former confederacy. the phrase was derived from a louisiana law of 1890, although the law actually used the phrase "equal but separate

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d. it adversely affected american productivity