The Ohio and Mississippi rivers to name two.
Mississippi River (shares its name with the state of Mississippi)
The river of Rhode Island is an argentine river
Mississippi
They are the States that a US States shares a border with.
Colorado
Mexico.
Two countries share a border with the United States. To the north, the US shares a border with Canada. To the south, the US shares a border with Mexico.
Georgia is the name of a country in Eastern Europe that shares its name with a southern US state.
Too many to name them all, twelve in the US north and four in the south.
Washington was the first US president, so anything that shares that name would have to be Washington as well.
Hawaii
The US shares borders with two other states (countries) - Canada and Mexico