Who is samuel gomper?

answer:

Samuel Gompers was a Jewish immigrant labor union leader and a key figure in American labor history. Gompers founded the American Federation of Labor, and served as the organization's president from 1886 to 1894, and from 1895 until his death in 1924.

sonar maybe? ? i dont know the choices

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.