There is no photo, therefore I can not answer your question.
The correct answer is sectionalism :)
Because they want to keep their european Rivals Away from Valuable town and Mines in Mexico.
North America was really Loaded with Gold and Silver, and has Accounted for more than 20 % of Spains Budget back then. That's why they want to assert control over it
The trends that had the impact on the Americans in the 1920s were the:
Consumerism culture
The great depression
The crash of the stock market
The consumerism culture
This was a spending culture that was rampant in the US at the time. People spent more money on items they did not need instead of saving.
The crash of the stock market.
The New York stock market crashed on what is regarded as a black Tuesday. Lots of investors pulled out of the market and people lost a lot of money.
The great depression
This period followed the crash of the stock market. The depression was a period of downturn and suffering in the country. There were unemployment issues and people lost their homes.