Where was the volcano which erupted in 1815 in what is considered the largest volcanic eruption in recorded history?

Question

Ash from what volcano, when it erupted in June 2011, grounded flights in Chile, Bolivia, Argentina, Uruguay and Paraguay and disrupted air traffic over Australia and New Zealand?

Answer 1

Sumbawa island, Indonesia
Mount Tambora on Sumbawa island in Indonesia erupted in April 1815, the blast, pyroclastic flows, and following tsunamis of which killed at least 10,000 islanders, destroyed the homes of 35,000 more, expelled as much as 150 cubic km (roughly 36 cubic miles) of ash, pumice and other rock, and aerosols - including an estimated 60 megatons of sulphur - and affected global weather with drastic temperature drops for many months. Krakatoa's also devastating eruption was in 1883, in the Sunda Strait. The most noted eruption of Mount Pinatubo, in the Zambales Mountains, over the last few hundred years was in 1991. Novarupta, in Alaska, was only formed in 1912, in the course of erupting.