The 1902 eruption of Santa María was one of the largest eruptions of the 20th century, measuring a six on the volcanic explosivity index. The main eruption began on 24 October 1902 and lasted no more than 20 hours. Prior to its catastrophic eruption, Santa María had no record of an eruption. The eruption killed between 5,000 and 8,700 people. Immediate knowledge about the eruption was suppressed by President Manuel Estrada Cabrera due to the occurrence of a propaganda festival at around the same time of the eruption. Aid did not reach the affected areas immediately and only arrived in December.
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