How did the US respond to the outbreak of World War 1 in Europe?

Who helped plan Washington DC? Who was Eli Whitney's stepmother? What are some factors that helped the US economy change and grow? What was the name of the institution in US where Antonin Dvorak was director for three years? Why did many support the ratification of the Constitution without the Bill of Rights? When is a banner display? What was the result of the mexican war of independence? How much is an 1835 100 dollar bill worth? Where is the date on a Presidential dollar coin? Who was elected in 1980? Grant believed that the war of what being able to wear the other side down? How did the role of slavery in Missouri change from 1840 to 1870? Who was the general who talked to the drummer boy the night before the battle? What is value of 1977 d quarter with filled mint mark? What is the value of a silver coin uncirculated year 1881 with the mark S from 15th anniversary 1950- 1965 union national bank of Chicago? 5 dollar gold 1910 Indian head coin? Why did the United States lead a coalition to invade Iraq in 1991? Why was the US able to acquire Florida from Spain in 1819? Value of a 1919 one cent piece? Why did John Brown lead a raid on Harpers Ferry?