Hello there ^ _ ^
Labor unions are restrained in their wage demands because the labor demands curve.
Good luck!
Well without a description om shooting in the dark. But id assume that the answer is Trench Warfare. Since A- was around since contact with Native Americans and largely popular in North America. B- Only was used and discovered in WW2. And C- was used but was largely frowned upon and condemned by both sides.<span />
Wheres the choiceis i cant do it without thim