Europe and later Africa exported, unintentionally, more than a dozen diseases that killed large numbers of American natives. Some, like measles and chickenpox, were childhood diseases that usually did not cause many deaths in the Old World but killed millions of American natives.
Mission Bay (San Diego) Mission Bay is a saltwater bay or lagoon located south of the Pacific Beach community of San Diego, California. The bay is part of the recreational Mission Bay Park, the largest man-made aquatic park in the country, consisting of 4,235 acres (17.14 km2), approximately 46% land and 54% water. The combined area makes Mission Bay Park the ninth largest municipally-owned park in the United States.
Mission Bay, Florida. Mission Bay was a census-designated place (CDP) located in an unincorporated area near Boca Raton in Palm Beach County, Florida, United States. The population was 2,926 at the 2000 census. While it is not officially in the City of Boca Raton, the community is frequently classified under its umbrella term.