The past is prologue to scenario consultants. Things that happened on April 10 through history.
879: Louis II becomes King of the Western Franks. In the East, the battle is between Fenway Franks and Hebrew National.
1606: The Virginia Company of London is established by royal charter of James I to allow for settlements in North America. Jamestown is founded the following year.
1815: The Mt. Tambora volcano in Indonesia begins a three-month-long explosion, killing 11,000-12,000 directly as a result of the explosion and another ~60,000 people via starvation due to agricultural collapse in the region, and massively altering global climate for the next few years. In a normal year in our current era, humans pump some 130 times as much CO2 into the atmosphere as all the volcanoes in the world. This would not have been the case in 1815, even if humans had been in the mass-carbon-pumping phase of their development, which they were not. Tambora blew some 100 cubic kilometers of ejecta into the atmosphere (by comparison, Mt. St. Helens ejected approximately 1 cubic kilometer's worth of rock and other substances). 1816 was subsequently known in the northern hemisphere as "The Year Without a Summer." Snow fell in various parts of the northeastern United States and Canada from June 6-10, 1816. Crops were ruined across the continent. In mid-2011, the alert level for Mt. Tambora was raised by the Indonesian government to the second-highest level, after a continuous series of earthquakes occurred. It has since apparently subsided.
2010: An airplane carrying 96 Polish government officials, including President Lech Kaczynski and his wife, a former president, senior military officers and 15 members of the Polish parliament, crashes near Smolensk, Russia. Tragically, the group was coming to commemorate the 70th anniversary of the Katyn Massacre, the killing of at least 22,000 Polish military officers by Soviet forces in 1940.