According to the chart on immigration to the united states, 1901-1920, the greatest percentage of immigrants to the united states in that period came from:

Came from non-English speaking European countries specially Italy, Poland, Russia, Ireland attractive for the cheap land and opportunities, quite different in culture and language

Explanation:

the most famous of all the units fighting in cuba, the "rough riders" was the name given to the first u.s. volunteer cavalry under the leadership of theodore roosevelt. roosevelt resigned his position as assistant secretary of the navy in may 1898 to join the volunteer cavalry. the original plan for this unit called for filling it with men from the indian territory, new mexico, arizona, and oklahoma. however, once roosevelt joined the group, it quickly became the place for a mix of troops ranging from ivy league athletes to glee-club singers to texas rangers and indians.

we need the chart or check box