Important events during his tenure as prime minister included the War of 1812 with the United States, the Sixth and Seventh Coalitions against the French Empire, the conclusion of the Napoleonic Wars at the Congress of Vienna, the Corn Laws, the Peterloo Massacre, the Trinitarian Act 1812 and the emerging issue of Catholic emancipation. Scholars rank him highly among all British prime ministers, but he was also called "the Arch-mediocrity" by a later Conservative prime minister the Earl of Beaconsfield (Benjamin Disraeli).