They depended on cotton and should have been growing more than one crop.
Americans were upset and disliked Castro. He took away money and a way to make money from them and Castro also went to help and benefit the people the Americans were hurting by providing the Cubans better healthcare and education.
Castro was incredibly popular with the Cubans as he allowed for them to not only have their land and means of living and earning money back, but he also promised to better them by giving them better healthcare and education.
C: depositing silt, which created rich soul for growing crops.
The 44th President of the United States, Barack Obama
hope this helps