Question

1. who began gathering smaller unions under the umbrella of a larger organization called the national labor union? andrew carnegie uriah s. stephens william h. sylvis

Explanation:

To solve this, we recall labor union history. The National Labor Union was organized by William H. Sylvis. Andrew Carnegie was an industrialist, and Uriah S. Stephens was involved with the Knights of Labor, not the National Labor Union.

Answer:

William H. Sylvis