The Treaty of Versailles was designed mostly to punish Germany, reflecting the bitter and vengeful feelings that Britain and France felt towards their World War I enemy. It took away the German empire by seizing its colonies, and it limited the German Army to a 100,000 man security force.
The National Consumer's League is an American organization that advocates for consumers on marketplace and workplace issues. As on of the things they do is to promote safer and secure workspace, I think they might have been protesting about factory's clean workplace.
A "seniority system" is an employment system that allots to employees rights and benefits according to the length of their employment. The principal feature of all seniority systems is time.
