Which best describes the group of people who the us government forced into internment camps during world war ii

The group of people that was forced by the US government to go to internment camps was the Japanese-Americans.

Explanation:

The Executive Order 9066, issued on 19 February 1942 by President Franklin Roosevelt, decreed that all residents of the United States of Japanese origin, even if born on American soil, had to to be locked up in a concentration camp.

The objective was to move them from their habitual residence, mostly on the West Coast, to facilities built under extreme security measures. The fields were closed with barbed wire fences, guarded by armed guards, and located in places far from any population center. Attempts to leave the camp sometimes resulted in the dejection of the inmates.  

There were also internments in US concentration camps for citizens of German and Italian origin, because these two countries also declared war on the United States, but the number of affected citizens was minimal compared to those of Japanese origin.

a. poison gas was sprayed over battlefields by airplanes to weaken enemy positions before major attacks.