was formed in 1886, won wage increases and shorter work weeks for its members between 1890 and 1915.

The American Federation of Labor

Explanation:

The American Federation of Labor (AFL) was formed in December 1886 by craft unions who were unhappy with a national labor union known as the Knights of Labor.

The AFL became the largest labor union from then and for much of the early 20th century. With the numbers and influence they wielded, they were able to win wage increases for their members as well as shorter work weeks in their most prominent years which were between 1890 and 1915.

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.

answer: the risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: