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.
None of the Bay area missions boasted significant agriculture prodcution except Missions Santa Clara and San Jose (which ranked 2nd in the entire chain). Over the years 1782-1832 Mission Dolores harvested 87,000 bushels of grain and produce, placing the mission in the lower third of mission producers.