Final answer:
The island that experienced volcanic eruptions in the 1990s leading to major evacuations is Montserrat, due to the activity of the Soufrière Hills volcano.
Step-by-step explanation:
The island that experienced volcanic eruptions in the 1990s, resulting in the evacuation of more than two-thirds of its population, is Montserrat. The Soufrière Hills volcano on Montserrat became active in 1995, leading to several eruptions and ultimately rendering a significant portion of the island uninhabitable. This stands as a stark example of the potential dangers of living in close proximity to active volcanoes, despite the vibrant and lush life these islands can support during periods of dormancy. The eruptions resulted in the destruction of the capital city, Plymouth, and the relocation of the majority of the population. Volcanic eruptions, such as these, can be highly destructive and pose risks to human lives and infrastructure.