Poll taxes, literacy tests, and grandfather clauses were used in the South after 1890 to keep african americans from voting.
As many African Americans were poor or illiterate (being foreign slaves), they usually failed tests. The Poll tax was first instituted to keep slaves from voting, but with the poorest of the poor whites complaining, they soon changed it to the literacy test, so that they can keep slaves from using their new found right of voting.
1) protecting social welfare
2) economic reforms
3) economic efficiency
4) promoting moral improvement
1, 2, and 5 are all associated with WWI.
The Articles of Confederation was the initial document that was set up which formed the US government. It served as a constitution for the time before the actual Constitution was drafted. It gave the central government little power as there wasn't a real executive authority established in it.
The Rio Grande is the fifth longest river in the United States and among the top twenty in the world. It extends from the San Juan Mountains of Colorado to the Gulf of Mexico (1,901 miles) and forms a 1,255 mile segment of the border between the United States and Mexico.