Final answer:
Isabel's surroundings in Havana change quickly as a result of the Cuban Revolution, tourism, and cultural influences.
Step-by-step explanation:
Isabel's surroundings in Havana change quickly due to various factors such as the Cuban Revolution, tourism, and cultural differences. The Cuban Revolution led by Fidel Castro resulted in a socialist state and a trade embargo by the United States, which affected the economy and infrastructure of Havana. Additionally, the focus on tourism and capitalistic reforms after losing aid from the Soviet Union also brought about rapid changes in the city. Furthermore, the diversity of the Caribbean and the influence of different musical types add to the dynamic nature of Havana's surroundings.