The US Military has been officially integrated since President Truman signed it into law in 1947. The Korean War was America's first officially integrated war (fought by a US integrated military). 1947 was also the creation of the US Air Force; and the Korean War was also the first war fought by the US Air Force.
In Vietnam, the "ethnic diversity" of US Army units in South Vietnam almost mirrored US society exactly. Another words, when visiting any city in the US, what you would see there, you would see in US Army units in South Vietnam-minus females.
The ethnic diversity of the city is evident from the variety of restaurants in the downtown area
Ethnic Distribution Map
drunks
white
Give one example of ethnic diversity in the region of southwest asia
the Kinh ethnic groups
Spanish, English, and French settlers arrived in larger numbers and this increased the ethnic diversity in the American colonies.
Immigrants
Authoritarianism!
democrates
it is people of all the world
It means that there are different ethnic groups in a country. Or diverese ethnic groups.