Amain indicator of the spread of homelessness during the great depression was
bread lines.
westward migration.
hoovervilles.
unemployment.

The correct answer is - Hoovervilles.

The infamous Hoovervilles were built in the period of the Great Depression, in the United States. They got their name after the president in charge at that time, President Hoover. Basically, the Hovervilles were places built by the government, which were composed of lot of very small shelters, and their purpose was to give roof over their heads to the homeless people in the United States, but on a temporary basis.

an effect of the steamboat's popularity was that people began building canals in the united states and europe. this was done to find another way to transport goods across the country and in that time, transportation using the river was very slow and dangerous. it depended entirely on manpower and the current of the river. that all changed in the late 1700's when steamboats were introduced. they soon revolutionized travel and trade through the river and dominated the waterways. eventually, other means of transportation took over from the steamboats, but there was a time that they the united states to expand to the west.