Did ethnic enclaves have a positive or negative impact on immigrants in the 1800’s

Mostly a positive impact, though the answer really depends on the case being analyzed

Explanation:

Ethnic enclaves are geographic areas with a large concentration of a particular minority ethnic group, whereas outside this area most residents are of the majority ethnic group. Ethnic enclaves can refer to residential areas, commercial areas, or both. They are often formed by migrant rapidly gathering in specific areas or neighborhoods, where they settle. The reason migrants tend to cluster in a single area is because it provides social capital, understood as a network of people who share interpersonal relationships, interests, goals, values, identity and norms and thus work together to succeed as a group rather than as individuals. Since migrants often have little to no support when arriving to a new country, the social capital provided by ethnic enclaves is crucial for economic and social success.

there is no photo, therefore i can not answer your question.

the  wilmot proviso  was designed to eliminate  slavery  within the  landacquired as a result of the mexican war (1846-48). fearing the addition of a pro-slave territory, pennsylvania congressman david  wilmot proposedhis amendment to the bill.