What did Rosevelt do/

Roosevelt was a leader of the progressive movement, and he championed his "Square Deal" domestic policies, promising the average citizen fairness, breaking of trusts, regulation of railroads, and pure food and drugs. ... In foreign policy, he focused on Central America where he began construction of the Panama Canal.

Explanation:

 Hope this helped

answer; i believe its called ; checks   and balances;

i would think yes.

explanation:

because we have every natianlity in our country which makes us so diverse and unique. that's why in a lot of cities there are places like little italy, koreatown, chinatown.