Pensacola was the first European-inhabited settlement in what would later become the United States of America. The first European settlement in the continental United States was Pensacola, which was established on Santa Rosa Island by conquistador Don Tristan tristÃ¡n De luna Y arellano in. 1559
Alexander Fleming discovered penicillin from mold that contaminated a petri dish of Staphylococcus bacteria. Researchers at Oxford University experimented with the new mold that Alexander Fleming had discovered. Penicillin was actually discovered by mistake.
International Historic Chemical Landmark. 1  Contents. 2  Alexander Flemingâs Discovery of Penicillin. 3  Penicillin Research at Oxford University. 4  Penicillin Production in the United States during WWII. 5  Increasing the Yield of Penicillin. 6  U.S. Pharmaceutical Companies Support Production. 7  Scaling-up Penicillin Production.