The social programs of the Great Society, such as Medicaid, job training programs, and rent subsidies, helped many poor African Americans. All African American citizens were aided by the passage of the Civil Rights Act of 1964, which ended discrimination in employment and prohibited segregation in public accommodations; the Voting Rights Act of 1965, which prohibited literacy tests and other racially discriminatory restrictions on voting; and the Civil Rights Act of 1968, which outlawed discrimination in housing.
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Yes, it is true that the technology and factory assembly lines of the 1900s changed American life forever, since these turned America into an industrial cornerstone of the world, which set its place in the 20th century.
That would be productivity.
It was the year 1798 that Thomas Malthus predicted that the humanity would be met with mass starvation. His prediction was based on an assumption that human population would far exceed the means of producing food and that we just would not be able to produce enough food for everyone. But the technological advancement and the advanced farming techniques allowed us to increase productivity and thus avert this prediction.