Why did leaders all over the world know Chief Plenty Coups?

Famous leaders all over the world knew Chief Plenty Coups. They considered him a great chief of his people and respected him for how he worked with other leaders during this time. Plenty Coups was known widely as a great leader of his people as well as a statesman and a negotiator. With those abilities and what he felt was spiritual guidance, he was able to negotiate very effectively with the leaders of the world during his time. The museum at Pryor has letters, photographs and documents from four different presidents to Plenty Coups.
The allied commanders of World War I recognized Chief Plenty Coups as an equal and a friend. These important leaders, General Ferdinand Foch of France, General Diaz of Italy, General Pershing of Great Britain and General Harbourd of the United States, were the combined generals of the allied forces during World War I. By the same right, Plenty Coups was considered a leader of this country and a leader of the world during his time. From: Chief Plenty Coups State Park Museum Tour Content