Gun

A gun is a normally tubular weapon or other device designed to discharge projectiles or other material. The projectile may be solid, liquid, gas or energy and may be free, as with bullets and artillery shells, or captive as with Taser probes and whaling harpoons. The means of projection varies according to design but is usually effected by the action of gas pressure, either produced through the rapid combustion of a propellant or compressed and stored by mechanical means, operating on the projectile inside an open-ended tube in the fashion of a piston. The confined gas accelerates the movable projectile down the length of the tube, imparting sufficient velocity to sustain the projectile's travel once the action of the gas ceases at the end of the tube or muzzle. Alternatively, acceleration via electromagnetic field generation may be employed in which case the tube may be dispensed with and a guide rail substituted.

The first devices identified as guns appeared in China around CE 1000. By the 12th century the technology was spreading through the rest of Asia, and into Europe by the 13th century.

Law

Law is a system of rules that are enforced through social institutions to govern behavior. Laws can be made by a collective legislature or by a single legislator, resulting in statutes, by the executive through decrees and regulations, or by judges through binding precedent, normally in common law jurisdictions. Private individuals can create legally binding contracts, including arbitration agreements that may elect to accept alternative arbitration to the normal court process. The formation of laws themselves may be influenced by a constitution, written or tacit, and the rights encoded therein. The law shapes politics, economics, history and society in various ways and serves as a mediator of relations between people.

A general distinction can be made between (a) civil law jurisdictions (including Catholic canon law and socialist law), in which the legislature or other central body codifies and consolidates their laws, and (b) common law systems, where judge-made precedent is accepted as binding law. Historically, religious laws played a significant role even in settling of secular matters, which is still the case in some religious communities, particularly Jewish, and some countries, particularly Islamic. Islamic Sharia law is the world's most widely used religious law.

John Howard

John Winston Howard, OM, AC (born 26 July 1939), was the 25th Prime Minister of Australia, serving from 11 March 1996 to 3 December 2007. Only Sir Robert Menzies has served in the position longer.

Born in Sydney, Howard worked as a solicitor before entering politics, having studied law at the University of Sydney. A member of the Liberal Party and former president of the Young Liberals, he first stood for office at the 1968 New South Wales state election, but lost narrowly. At the 1974 federal election, Howard was elected to the Division of Bennelong, which he would go on to represent until 2007. He was promoted to cabinet in 1977, and later in the year replaced Phillip Lynch as Treasurer of Australia, remaining in that position until the defeat of Malcolm Fraser's government in 1983.

In 1985, Howard was elected leader of the Liberal Party for the first time, thus replacing Andrew Peacock as Leader of the Opposition. He led the Liberal–National coalition to the 1987 federal election, but lost to Bob Hawke's Labor government, and was removed from the leadership in 1989. Remaining a key figure in the party, Howard was re-elected leader in 1995 (replacing Alexander Downer), and subsequently led the Coalition to victory at the 1996 federal election.