Joseph Leonard

The English Civil War (1642–1651) was a series of civil wars and political machinations between Parliamentarians ("Roundheads") and Royalists led by Charles I ("Cavaliers"), mainly over the manner of England's governance and issues of religious freedom. It was part of the wider Wars of the Three Kingdoms. The first (1642–1646) and second (1648) wars pitted the supporters of King Charles I against the supporters of the Long Parliament, while the third (1649–1651) saw fighting between supporters of King Charles II and supporters of the Rump Parliament. The wars also involved the Scottish Covenanters and Irish Confederates. The war ended with Parliamentarian victory at the Battle of Worcester on 3 September 1651.

Unlike other civil wars in England, which were mainly fought over who should rule, these conflicts were also concerned with how the three Kingdoms of England, Scotland and Ireland should be governed. The outcome was threefold: the trial of and execution of Charles I (1649); the exile of his son, Charles II (1651); and the replacement of English monarchy with the Commonwealth of England. From 1653 the Commonwealth of England, Scotland, and Ireland unified the British Isles under the personal rule of Oliver Cromwell (1653–1658), and briefly his son Richard (1658–1659).

In England, the monopoly of the Church of England on Christian worship was ended, and in Ireland, the victors consolidated the established Protestant Ascendancy. Constitutionally, the outcome of the wars established the precedent that an English monarch cannot govern without Parliament's consent, though the idea of Parliamentary sovereignty was legally established only as part of the Glorious Revolution in 1688.

Physicist, mathematician and inventor. Laid the foundation of classical mechanics, which formed the basis of physical science until Einstein. Formulated universal laws of motion and the law of universal gravitation. Demonstrated how these laws explained both the motion of planets and comets and objects on Earth. Invented a form of the calculus. Invented the first practical reflecting telescope. Proposed that Earth was an oblate spheroid. Calculated the speed of sound.

Middlesex County, Massachusetts was created on May 10, 1643 as one of four original counties created in the Massachusetts Bay Colony. The county was named for the English county of Middlesex.