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.
View of the entrance to Belmont Park with the Giant Dipper roller coaster in the background. Belmont Park is a historic oceanfront amusement park located in the Mission Bay area of San Diego, California. The park was developed by sugar magnate John D. Spreckels and opened on July 4, 1925 as the Mission Beach Amusement Center.