Once a thriving automobile mecca, Detroit is now one of the most poverty-stricken cities in the US. The city's economic growth began in the 19th century, with the rise of the auto industry in the 20th century leading to a mass migration of workers. However, struggles within the industry and racial tensions caused the city to decline. Factors such as a lack of diversity in the economy, decentralization of the auto industry, and crime contributed to Detroit's decline. The city declared bankruptcy in 2013 but is now making efforts to revitalize itself.