1984: Xavier and Magneto establish the school in Westchester.

1985: First class attends Xavier's.

1987: William Stryker receives government approval for Weapon-X. He begins work on Wolverine in the same year. Jason Stryker leaves the school. Xavier and Magneto part ways over ideological differences.

1988: Jason Stryker is lobotomized and work begins on the mind-control serum. Wolverine escapes from Weapon-X after receiving the Adamantium feed.

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February 2007: A stranger presents Stryker with the solution to completing his mind-control serum. Magneto assembles the Brotherhood.

June-July, 2008 : Events leading up to Liberty Island occur. Mystique replaces Senator Kelly in the Senate.

Mid-October, 2008: An assassination attempt is made on the president leading up to the events of Dark Cerebro. Jean Grey is lost at the bottom of Alkali Lake. Many normal-looking mutants are exposed for what they are, leading them to flee for their lives. They gather together and form the Underground to aid others like themselves. The president makes a televised speech advocating mutant-human cooperation and is promptly voted out of office in a referendum. A hardliner is elected in his place. The new president's cabinet is filled with high-ranking members of the military. Humans begin attacking mutants in retribution for the Dark Cerebro disaster.

November 3, 2008: An anonymous informant leaks evidence that the government and Professor Charles Xavier were involved with the Dark Cerebro Incident onto the internet. Fanatical mutants start clamoring for revenge against the humans while the latter begin gathering in front of Xavier's estate, calling for his execution.

December 6, 2008: A "cure" for mutancy is announced by Worthington Laboratories. Magneto begins expanding Brotherhood in response.

December 18, 2008: Magneto's attack on the prison convoy causes national alarm. First major anti-mutant riots begin.

December 25, 2008: The Christmas Day Massacre occurs in Indianapolis. A mysterious band of mutants murder seventy-six at a Friends of Humanity rally. Magneto denies responsibility. President Clinton declares state of emergency in major cities. Mutant partisans barricade major highways to preempt the assertion of federal power.

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January 2, 2009: The mutant blockades are broken. Many major cities are retaken by the government but not before some are set ablaze. Hundreds of thousands are displaced. Public outcry calls for a crackdown on mutants.

January 9, 2009: A distribution date is announced for the cure. Thousands of disenfranchised mutants gather in San Francisco to be the first to receive it. Despite continuing violence elsewhere, a tentative peace prevails in the city.

January 18, 2009: The mutant insurgency regains momentum. Just two weeks after being pushed out of most major cities, the mutants have regrouped and recaptured several key urban areas. Though federal forces were eventually able to drive them out once more, the insurgents had already completed looting of essential supplies and caused extensive property and infrastructure damage.

February 27, 2009: Several facilities related to the cure are attacked, prompting the government to step up its efforts at stockpiling the weapon. As a result, the distribution date for public use has been pushed back indefinitely, leading to unrest amongst eager mutants waiting for their humanity.

March 4, 2009: Video footage captured during the Bleeding of Detroit is released. The brutality of the images hardens the nation's resolve and pushes the country into an even harder line against mutants. At the same time, the glimpse of victory has encouraged even more mutants to join the insurgents' ranks.

June 20, 2009: The long stalemate that had been in place since the beginning of April continues to unravel. After a two month freeze in violence, the conflict reignites brutally following the Sack of New Orleans by mutant militia. With the barricades down, mutants now have free reign to travel most of the country and the government clings to vital cities in the hope of weathering the onslaught. An undertone of panic now begins to grip the wider public.