What effect did homelessness have on people's around the world after WWI.

- Increased Crimes

The pressure that derived from hunger and illness drove many homeless veterans to conduct crimes in their home country,.

- Increased substance abuse

The horrific condition made many of these homeless to find some sort of escape, and drug provided that escape for them. Many of the homeless ex-veteran was trapped in substance addiction  through the use of heroine or cocaine.

- Increasing emergency housing movement

Not all people turn their attention away from them. Some people actually banded together to help by creating public housing that these ex-veteran use as temporary shelter. At least until they're economically strong enough to come back at their feet.

the correct answer is d: "party organizers, volunteers, voters, and elected officials."