==Events and trends== Abbot Suger rebuilds the monastery of St Denis outside Paris, seen as the initiation of the Gothic style. Gratian's Decretals reinvigorate study of canon law and civil law. 1142 — End of the reign of Emperor Sutoku, emperor of Japan 1142 — Emperor Konoe ascends to the throne of Japan 1143 — Celestine II elected pope 1144 — Pope Celestine II is succeeded by Pope Lucius II 1146 — Saint Bernard of Clairvaux preaches the Second Crusade… (More on 1140s)