Final answer:
Music and Carnival are two social activities among Caribbean countries.
Step-by-step explanation:
Two social activities among Caribbean countries are music and Carnival.
Music: The Caribbean is known for its rich and diverse musical traditions. Various music genres have emerged from different islands in the region, such as reggae in Jamaica, salsa in Cuba, and calypso in Trinidad and Tobago.
Carnival: Carnival is a vibrant and colorful celebration that takes place in many Caribbean countries. It typically includes parades, costumes, dancing, and music. Each country has its own unique style and traditions during Carnival.