Complex sentence: Richler's long-running dispute with Quebec nationalists was fueled by magazine articles he wrote in American publications between the late 1970s and mid 1990s, in which he criticized Quebec's language laws, and separatism.
Split into simpler sentences: Richler's long-running dispute with Quebec nationalists was fueled by magazine articles he wrote in American publications between the late 1970s and mid 1990s. The articles criticized Quebec's language laws, and separatism.