History of the world's tallest buildings of world's tallest building was borne by shorter buildings. St. Mary's Church in Stralsund became the world's tallest building after the collapse of Lincoln Cathedral's spire. The central tower of St. Pierre's Cathedral was tallest from 1569 until it collapsed in 1573, making St. Mary's the tallest once again. In 1647, the bell tower of St. Mary's burned down, making the shorter Strasbourg Cathedral the world's tallest building. It was not until the completion of the Ulm Minster in 1890 that the world's tallest building was again also the tallest building ever constructed, surpassing the original configuration of Lincoln Cathedral.
1311 massacre of Mongols in the Delhi Sultanate 1311 massacre of Mongols in the Delhi Sultanate In 1311, the Delhi Sultanate ruler Alauddin Khalji ordered a mass massacre of the "New Muslims" (Mongols who had recently converted to Islam), after some Mongol "amirs" of Delhi conspired to kill him. According to chronicler Ziauddin Barani, 20,000 or 30,000 Mongols were killed as a result of this order. The Khalji dynasty of the Delhi Sultanate was of Turkic ethnicity and had fought several wars against the Mongol invaders from Central Asia. In 1292, the Delhi Sultan Jalaluddin Khalji had permitted several thousand Mongols to settle in his empire after they