"Mi-Gook Sah Rahm" (미국사람) does not mean "white person" (백인).

I just notice when Koreans refer to a caucasian (American), they call the person an "American" not for his or her citizenship, but for that person's race.

But for some reason, if the American person is African-American, he's not a "Mi-Gook Sah Rahm", he is a "Hoog-een" (a black person-흑인).

OK... I already see it.
But they(a black person) contributed development of the America.
President Lincoln loved them.
I very like to president Lincoln and John f.Kennedy.
I very well know about America's history.
So i wish to go to America. but i no money.
I want to see wide land. and i wanna drive it.
Korea is very small.
I can´t wait to go to U.S.A
I should like to go to America

Oh yes! African-Americans indeed helped shape America.
Lincoln was a good ol man; but I was never sure what the deal with Kennedy was except the fact he was young and assassinated.

Driving in America...it is a beautiful experience. I miss it so much. If you ever go, be very careful where you drive, though...know where you're going.