Brian Mulroney is a Canadian politician who served as the 18th Prime Minister of Canada from 1984 to 1993. He was the leader of the Progressive Conservative Party and is known for implementing significant economic reforms and trade agreements, including the Canada-U.S. Free Trade Agreement. During his time in office, Mulroney focused on issues such as environmental protection and constitutional reform. His government also played a role in the introduction of the Goods and Services Tax (GST). After leaving politics, he became involved in various business ventures and continued to influence Canadian public life.