The 12th century is defined by the calendar of Earth as occurring from the year 1101 through the year 1200. Events Edit

Delphic Expanse sphere The Second and Third Crusades are fought on Earth (1147-48 and 1189-92). In the latter war, King Richard the Lionheart failed to take Jerusalem from Saladin. (TOS: "The Squire of Gothos", DS9: "Q-Less", VOY: "The Killing Game") The spheres are constructed by the Sphere Builders. (ENT: "Anomaly") Kulkulkan visits the Aztec civilization on Earth and helps in their development. (TAS: "How Sharper Than a Serpent's Tooth") Vissians develop warp capability by this time. (ENT: "Cogenitor")

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