Between 1820 and 1850, some americans discriminated against irish immigrants because the irish were mostly catholic. did not speak english. were well educated. wanted to become farmers.

Between 1820 and 1850, some Americans discriminated against Irish immigrants because the Irish were mostly Catholic.

A Few other reasons the Irish were discriminated  was because they considered Irish to be a different race blamed for rising crime, poverty, and disease. worked for little money which forced wages lower. celebrated Sabbath with alcohol blamed for alcoholism in America.

A Mostly Catholic

Explanation:

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a. the astrolabe could determine the correct latitudinal location of the ship

after the roman empire, the catholic church began to unify by taking on many duties of a government.