In the 1920s, the United States experienced an economic boom due to, among other things.

they had a large supply of natural resource, and immigrants were a cheap source of labor. also world war 1 fueled economic growth. inventions and mass production also helped to fuel the economy

Explanation:

a yes vote means: the legislature, with a two-thirds vote, could change daylight saving time if the change is allowed by the federal government. absent any legislative change, california would maintain its current daylight saving time period

"they had a large area of land that they owned."