What were 3 contributions that were made by ya during ww1

1. Management of scientific methods

2. Progressive line

3. Speakeasy

Explanation:

1. Management of scientific methods: after the WW1, some improvement were made in regards to scientific techniques and innovations. Some new weapons were created as a result of this improvement.

2. Progressive line: this has to do with improvement in manufacturing processes in which parts are lined as semi - finished items.

3. Speakeasy: these are legal establishment after the WW1 where people tend to go to ease themselves like pubs, bars and clubs.

1. The American red cross in north expanded in size and increases the numbers of local chapter.

2. The war camp community service.

3. The students army training corps

Explanation:

The American red cross ran canteen at rail road to feed the traveling soldiers and donate clothing and other important items.

The war camp camp community service organize entertainment troop, reading and writing rooms for soldiers.

The students army training corps urged the churches to ring it bells two minutes every night at 7:00 until the war was won.