 Complete the following phrase:  A series of major disasters occurred in the state from the 1920s to the 1940s. In 1928, a series of earthquakes destroyed many of the buildings in the capital. A much larger earthquake in 1931 was the largest in the states history, devastating a number of cities along the coast. The 1930s brought the Great Depression, which along with the disasters, prompted wide-scale migration to Mexico City. In 1944, torrential rains caused massive flooding in the Tuxtepec region, causing hundreds of deaths. Oaxaca suffered more large earthquakes in 1980, 1999, 