Henry de Percy, 1st Baron Percy the commissioning of Warwolf, a giant trebuchet which flattened the curtain walls. The defenders had tried to surrender four days earlier, but had been made to wait by the king while he tried out his new toy. In September 1305 the first joint English and Scottish parliament met at Westminster to agree a constitution for the unified state, with Percy playing a leading role in the negotiations, but Robert Bruce, a leading representative of the Scots, was already conspiring to rebel. On 25 March 1306 Robert Bruce was crowned King of Scotland at Scone Abbey, upon which Edward confiscated his
Mongol invasion of India (1306) not invade the Delhi Sultanate during Alauddin's reign. The victory greatly emboldened Alauddin's general Tughluq, who launched several punitive raids in the Mongol territories of present-day Afghanistan. Duwa, the ruler of the Mongol Chagatai Khanate in Central Asia, had dispatched multiple expeditions to India before 1306. Alauddin Khalji, the ruler of Delhi Sultanate of India, had taken several measures against these invasions. In 1305, Alauddin's forces inflicted a crushing defeat on the Mongols, killing about 20,000 of them. To avenge this defeat, Duwa sent an army led by Kopek to India. Various transcriptions of the name of Duwa Khan's general