They believed that the Constitution was a "strict" document that clearly limited the powers of the federal government. Unlike the opposition Federalist Party, the Democratic-Republican Party contended that government did not have the right to adopt additional powers to fulfill its duties under the Constitution.
There are more than 3, so I'm not sure if you're looking for any 3 in particular. Powder, capsules, tablets pellets, pills, lozenges. Those are a few.
The progressive party was successful in getting congress to pass and the states to ratify the seventeenth amendment on april 8, 1913, which allowed for the direct election of u.s. senators by the voters themselves, substituting Article I, Section 3, Clauses 1 and 2 of the constitution, in which the Senate was elected by the State Legislatures.
The greatest European superpower, with the largest landholdings during the age of imperialism was "Great Britain," since they had control of some of the most advantageous locations in Africa, along with places like India that greatly enriched them through trade.