Given the task definition and input, reply with output. In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

The colonial history of this nation includes a time when it was dominated by the "Hundred Associates," and a longstanding dispute in this nation was partially resolved through the recent Clarity Act. William Vander Zalm was elected to a leadership role in one part of this country under the banner of the Social Credit movement. One leader of this nation was intermittently opposed by George Brown and was involved in the Pacific Scandal. Another leader of this nation took advantage of the War Measures Act to proclaim a state of "apprehended insurrection," in one part of this country, a response to a series of events known as the October Crisis. This nation held a constitutional convention in 1987 which culminated in the Meech Lake Accords, and its leaders have included Brian Mulroney and Pierre Trudeau. For ten points, identify this country currently led by Steven Harper.
History