What increased in regards to farmers during the 1920s?

They had been able to supply Britain and France with food on a regular basis. Britain relied on imports of foreign food to feed its population and when the Germans began to sink merchant ships in 1917, food supplies became even more important. So farmers got to make more money by selling food to Britain.

It is the doctrine that the us had the right and duty to expand throughout north america. it just means they believed they had the right to expand westward and they did! they stated with the 13 colonies and then they kept moving gaining different territories throughout the years