Which pull factor drew increasing numbers of immigrants to the united states during the late 19th century and early 20th century?
a- a chance to gain political power
b- a government policy of welcoming immigrants
c- a dream of economic opportunities
d- a lack of ethnic discrimination among americans

Which statement best describes standard oil in the late 1800s? standard oil controlled only a small number of the nation’s oil refineries. standard oil was a single business that operated in a small region. standard oil controlled only the means and methods of oil production. standard oil owned ninety percent of all oil refineries in the united states.