Complex sentence: The Upper Peninsula miners'strike of 1865 was a strike by miners working on the United States' Marquette Iron Range, in the Upper Peninsula of Michigan, occurred in July 1865, shortly after the end of the American Civil War.
Split into simpler sentences: The Upper Peninsula miners'strike of 1865 was a strike by miners working on the United States' Marquette Iron Range, in the Upper Peninsula of Michigan. It occurred in July 1865, shortly after the end of the American Civil War.