Complex sentence: The "Canadian Party" continued as a parliamentary force after this defeat, and Archibald warned Prime Minister John A. Macdonald that they were seeking the "extermination" of the Metis.
Split into simpler sentences: The "Canadian Party" continued as a parliamentary force after this defeat. At one stage, Archibald warned Prime Minister John A. Macdonald that they were promoting the "extermination" of the Metis.