Thurgood Marshall and other NAACP lawyers including Frank Daniel Reeves.
His message in Mecca was not received well. He was being persecuted and mocked. He sought refuge in The Green Dome of Medina where he sought refuge and continued to spread the word of Islam becoming powerful and spreading Islam a d the word of Allah.
The Columbian Exchange had positive and negative consequences.
Some of the positive consequences were the introduction of different nutrients and food supplies into the Old World, such as corn or potatoes. This improved the diet of most Europeans, leading to a population growth in the next generations.
However, Europe benefited more than the Americas, for some of the negative consequences about the Columbian Exchange were the introduction of diseases into the continent and the slavery of African populations into the Americas.
A linguist studies language in a scientific way; so not just a certain language like Spanish, Mandarin or such, but how a language is written, communicated, it's forms, etc.
Yes he was diagnosed with infantile paralysis, also known as polio in 1921 at the age of 39