The major downfall of the Articles of Confederation was simply weakness. The federal government, under the Articles, was too weak to enforce their laws and therefore had no power. The Continental Congress had borrowed money to fight the Revolutionary War and could not repay their debts
It was mainly developments in the "steel" industry that made important contributions to improvements in the transportation system in the United States during this time, since the major advancement in transportation was in the railroads, which were made from steel.
It should be chronological: US Civil War: 1861-1865, Reconstruction: 1865-1877, Progressive Era: 1890-1920s
Elvis Presley (rock-and-roll star), James Dean (actor, he died in 1954) and Chuck Berry ( rock-and-roll star) were famous icons of the 1950s youth culture. Frank Sinatra was not a famous icon, during the 1950's he was in a kind of shadow.
Correct answer is D - Frank Sinatra