Irish Potato Famine, cause of mass migration to North America, happened in 1846, i. e. near the end of slavery. The Italian wave of immigration came even later

Irish Potato Famine, cause of mass migration to North America, happened in 1846, i. e. near the end of slavery. The Italian wave of immigration came even later IIRC. (And "Hispanic" literally means "from Spain". Very few Spaniards crossed The Atlantic before Columbus.)