Question

american immigrants
why were american citizens concerned about european
immigration during the 1800s?
native americans
beware of
foreign influence
they thought the immigrants would cause a revolution
they thought they would not be able to buy more land
they thought the immigrants would compete with them for jobs
when immigrants from ireland and
germany began coming to america in the
1800s, americans were very concerned
about the impact of this immigration. many
americans were concerned that immigrants
would compete with them for jobs.

Explanation:

The text on the left side of the image mentions that when immigrants from Ireland and Germany came to America in the 1800s, many Americans were concerned that immigrants would compete with them for jobs. This directly relates to the third option on the right side.

Answer:

they thought the immigrants would compete with them for jobs