A common law system is a legal system that gives great potential precedential weight to common law, on the principle that it is unfair to treat similar facts differently on different occasions. The body of precedent is called "common law" and it binds future decisions. In cases where the parties disagree on what the law is, a common law court looks to past precedential decisions of relevant courts. If a similar dispute has been resolved in the past, the court is usually bound to follow the reasoning used in the prior decision (this principle is known as stare decisis). If, however, the court finds that the current dispute is fundamentally distinct from all previous cases (called a "matter of first impression"), judges have the authority and duty to make law by creating precedent. Thereafter, the new decision becomes precedent, and will bind future courts. The common law constitutes the basis of the legal systems of: England and Wales and Northern Ireland in the UK, Ireland, the law of individual U.S. states (except Louisiana), federal law throughout Canada and the law of the individual provinces and territories (except Quebec), Australia (both federal and individual states), Kenya, New Zealand, South Africa, India, Myanmar, Malaysia, Bangladesh, Brunei, Pakistan, Singapore, Hong Kong, Antigua and Barbuda, Barbados, Bahamas, Belize, Dominica, Grenada, Jamaica, St Vincent and the Granadines, Saint Kitts and Nevis, Trinidad and Tobago, and many other generally English-speaking countries or Commonwealth countries (except the UK's Scotland, which is bijuridicial, and Malta). Essentially, every country that was colonised at some time by England, Great Britain, or the United Kingdom uses common law except those that were formerly colonised by other nations, such as Quebec (which follows the law of France in part), South Africa and Sri Lanka (which follow Roman Dutch law), where the prior civil law system was retained to respect the civil rights of the local colonists. India uses common law except in the state of Goa which retains the Portuguese civil code. Guyana and Saint Lucia have mixed Common Law and Civil Law systems.