Simplify the following text for a Grade 12 native English-speaking person.
Original: In the 1980s , most SI parties gave their backing to the Nicaraguan Sandinistas ( FSLN ) , whose left-wing government had incited enmity from the United States .
Simplified: In the 1980s , most SI parties gave their backing to the Nicaraguan Sandinistas ( FSLN ) , whose left-wing government had incited hatred from the United States .