Complex sentence: On September 4,1961, partly in response, Congress passed the "Foreign Assistance Act", a Cold War Act (among many other measures) which prohibited aid to Cuba and authorized the President to impose a complete trade embargo against Cuba.
Split into simpler sentences: On September 4,1961, partly in response, Congress passed the "Foreign Assistance Act". This Cold War act (among many other measures) prohibited aid to Cuba and authorized the President to impose a complete trade embargo against Cuba.