Answer:
<em>Washington, D.C. is the capital of the US.</em>
Here are some places to go that i found on g00gle:
Jackson Hole, Wyoming
New York, New York.
Beaver Creek, Colorado.
Saint Lucia.
Highlands, North Carolina.
Solvang, California.
Stowe, Vermont.
Washington, D.C.
All except Poland and the Netherlands. HOWEVER! you could argue Poland did control some German land as after the war they were given land from Germany as war retributions.
The answer is slavery for sure and possibly economics or poverty