The use of robots and how they help build cars and how the assembly line has improved from the 1900's would be my answer.
The Metis are an indigenous people of Canada and Louis Riel was a leader of the Metis, and sought to preserve their culture and fight for their rights against the Canadian Government. He represented the affairs of the Metis to the government and eventually, he rebelled against the government, for which he was executed.
1. The conflict began after Athens and Eretria gave assistance to the Ionians in their rebellion against Persia and its ruler, Darius.