Final answer:
The most powerful, explosive volcanic eruption of historic time is debated among different events, but the eruption of Mount Tambora in 1815 is widely recognized as one of the most significant. It was a VEI-7 eruption that caused massive casualties and global climatic effects.
Step-by-step explanation:
The most powerful, explosive volcanic eruption of historic time is debated among different events. However, one of the most widely recognized eruptions in history is the eruption of Mount Tambora in 1815.
It was a VEI-7 eruption, the highest rating on the Volcanic Explosivity Index, and its impact was felt around the world. The eruption caused the death of tens of thousands of people and had severe global climatic effects, leading to a year without a summer in many parts of the world.