Answer:
Pennsylvania was an economic colossus driven by the expansion of mining, railroads, petroleum, iron and steel production, and manufacturing. The state's voracious demand for labor also fueled a new wave of European immigrants.
Explanation:
Answer:
African Americans were allowed to vote without restricitons.
Explanation:
States previously had poll taxes, literacy tests and other obstacles that only the educated white man could afford to pay or pass.
The enactment of the Clean Air Act of 1970 (1970 CAA) resulted in a major shift in the federal government's role in air pollution control. This legislation authorized the development of comprehensive federal and state regulations to limit emissions from both stationary (industrial) sources and mobile sources.
