What allowed for more land to be cultivated?

1. the increase in peasants wanting to farm
2. the profusion of silk producers
3. an increase in rice production
4. waterwheels that raised water levels

Explain the reasons for u.s. neutrality during the 1920s and 1930s. how did ideas about neutrality change during the period from the end of world war i to the passage of the lend-lease act? be sure to include any events, terms, or people that may support your response.