Answer:
WW1, Roaring Twenties, Dust Bowl, WW2, Cold War
Explanation:
Desire of the railroad companies to build rail lines on a deal of new land that open up to whether it was for the "free" or "slaves" .
The Immigration Restriction League wanted Europeans to pass a literacy test - A.
The reason for this was the fact that the Immigration Restriction League was an anti-immigration movement in the United States who advocated against immigration and they wanted to have minimal filters which would persuade against people who couldn't read to emigrate to the US.
Battle of Trafalgar, (October 21, 1805), naval engagement of the Napoleonic Wars , which established British naval supremacy for more than 100 years; it was fought west of Cape Trafalgar , Spain, between Cádiz and the Strait of Gibraltar.