Maryland is the closest state in size to the Netherlands, although there is about a 10,000 km2 gap.
Texas.
Florida
Ohio
new hampshire
rhode island
The combined size of the US states of Texas and California.
Colorado.
West Virginia
C.A.R. is approximately 622,980 km. The closest US state to that size is Texas which is 692,200 km. (The next largest US state, California, is 411,500 km.)
Germany is about the size of California, although a bit smaller.
it is the same size as everything esat of the Mississippi river
Georgia is about the same size as the US state of South Carolina. (69,700 sq kilometres.)