Political map of North America & the Caribbean 2 January 1441 (Collapse of the League of Mayapan): United since 987 under the League of Mayapan, the Maya of the Yucatán (Yucatan Maya) fell into civil war in 1441 when the ruler of Tutul Xiu (Ah Xiu Xupan) massacred the royal family of Cocom. With the power of Mayapan broken, the League disintegrated into more than a dozen independent states over the next two decades.    [Actual date uncertain: Map depicts situation at the beginning of the war.]