Nthe 1800s, both “old” and “new” immigrants to the united states faced hostility because of limited housing availability worries about overpopulation. high us unemployment levels. differences in culture and language.

Differences in culture and language.

Explanation:

Immigrants in the United States faced social tensions in the 1800s because they were regularly stereotyped and discriminated. They suffered violence because they were perceived as different. Despite the social tension, immigrants brought a new vitality to the US. They helped transform the American culture, showing that diversity and unity are the main sources of national strength.

in all honesty, it really hasn't. except that hitler killed himself.