Constitutional monarchy Act 1689, which placed similar limits on the Scottish monarchy. Although Queen Anne was the last monarch to veto an Act of Parliament when, on 11 March, 1708, she blocked the Scottish Militia Bill, Hanoverian monarchs continued to selectively dictate government policies. For instance King George III constantly blocked Catholic Emancipation, eventually precipitating the resignation of William Pitt the Younger as prime minister in 1801. The sovereign's influence on the choice of prime minister gradually declined over this period, King William IV being the last monarch to dismiss a prime minister, when in 1834 he removed Lord Melbourne as a
Liberum veto 1763, about 150 Sejms where held, of which 53 failed to pass any legislation. Historian Jacek Jędruch notes that out of the 53 disrupted Sejms, 32 were disrupted by the "liberum veto". The 18th century saw an institution known as a "confederated sejm" evolve. It was a parliament session that operated under the rules of a confederation. Its primary purpose was to avoid disruption by the "liberum veto", unlike the national Sejm, which was being paralyzed by the veto. On some occasions, a confederated sejm was formed of the whole membership of the national Sejm so that the "liberum veto"