The Houston Livestock Show and Rodeo came in 1932. In 1934, Houston Junior College became a four-year institution and changed its name to the University of Houston. A flood in 1935 suddenly turned conditions for the worst, and Houstonians were forced to clean up the mess. Air service by Braniff Airways and Eastern Air Lines came in 1935 and 1936. By the end of the decade, Houston was encountering growth pains, as the city had inadequate air service and that it was no longer a frontier town. Houston became the largest city in Texas in terms of population in 1939. Many immigrants and African-Americans from Louisiana and other parts of Texas moved to the city to find education or work. The city obtained a very multicultural atmosphere, with large African-American and immigrant communities scattered about. However, African-Americans faced bad housing and poor jobs during this time period. Nevertheless, African-American society developed so much that the city was, and still is, the African-American capital of Texas. The University of Houston moved to its present-day location donated by the Cullen family off of what would later be the first freeway in Houston, U.S. Highway 75 (now called Interstate 45), or Gulf Freeway.