Currency . Even thought it had just 8 letters is the right answer.
#4 Andrew Jackson attacked and captured Spanish forts, claiming Florida for the U.S. Monroe signed a treaty with the Spanish which gave Florida to the U.S.
Better working hours is also a possible answer. The Square Deal was an attempt to settle Poot working conditions between miners and employers. The terms of the deal included shorter working days and safer working conditions
Article I of the US Constitution puts this power in the hands of each State's legislature.
If you are interested in this topic, there is a fascinating development in this occurring in the Second Congressional District of Maine, which has adopted Ranked Choice Voting to determine its representatives. The loser of this year's election just sued in Federal Court to invalidate this as a way to hold an election.