The cause of Hoovervilles were when the economy began to downfall in 1930. Many people lost their homes and jobs.
Hoovervilles were towns built by homeless people during the Great Depression in the U.S.
Approximately 1.5 million Americans were homeless.
By 1940, the economy and employment levels had recovered and there were no longer Hoovervilles.
Authorities and other workers were tearing down the shacks at hoovervilles as a way to earn money.