Which reformer took up the cause of exposing the dangers and disgraceful working conditions of child labor?

Ida Tarbell

Upton Sinclair

Samuel McClure

Mother Jones

Which 19th century technological advancement would best allow farmers along the mississippi river in iowa to quickly transport their crops to buyers in louisiana?

Why were americans concerned about the future of north and south america? check all of the boxes that apply. they worried that european countries would take over independent countries in latin america. they thought that european nations could threaten democracy in the united states. they believed that europe would never again return to the americas.

The political viewpoint of a newspaper can be learned by reading the comics front page sports section editorial page