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Significant changes enacted at the national levels included the imposition of an income tax with the Sixteenth Amendment, direct election of Senators with the Seventeenth Amendment, Prohibition with the Eighteenth Amendment, election reforms to stop corruption and fraud, and women's suffrage through the Nineteenth century Explanation: BOOM
The first polio vaccine was the inactivated polio vaccine, developed by Jonas Salk. The oral polio vaccine was developed by Albert Sabin.
It made it possible to transport goods over large water ways. It also helped in the formation of a national identity by unifying the people.
Answer: Cotton diplomacy refers to the diplomatic methods employed by the Confederacy during the American Civil War to coerce the United Kingdom and France to support the Confederate war effort by implementing a cotton trade embargo against the United Kingdom and the rest of Europe.
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A river basin or drainage basin is an area of land drained by a river and its tributaries .
