Which university was founded as a trade school by a wealthy Jewish immigrant from Jamaica in 1921?

The correct answer is Delgado University, which was founded by a wealthy Jewish immigrant from Jamaica in 1921 with the purpose of serving as a trade school. Delgado Community College, as it is known today, was established to provide vocational training and education to help individuals develop skills for various trades, aligning with the original founder's vision of creating opportunities for the local community through practical education.

This context makes it clear why this university stands out compared to the others listed. Louisiana State University, University of New Orleans, and Tulane University were established under different circumstances and with distinct missions, primarily focusing on a broader audience and offering a wide range of degree programs beyond trade skills. Thus, Delgado's origin story and its intent as a trade school underscore its unique founding compared to the other institutions mentioned.