What is the Native American group that allied with Pitt's British troops?

Iroquois

http://www.sparknotes.com/history/american/revolution/section1.html

The Native American group that allied with Pitt's British troops during the French and Indian War were the Iroquois Confederacy. To find this answer, you can:

1. Conduct an internet search: You can search for "Native American allies of Pitt's British troops" or "Iroquois Confederacy in the French and Indian War" on a search engine. This will provide you with various sources and historical accounts explaining the alliances that formed during that time.

2. Refer to history books or academic sources: Check reputable history books focused on the French and Indian War or Native American history for information on the alliances formed between British troops and Native American tribes. These sources will offer detailed explanations and provide additional historical context.

By utilizing these research methods, you can find the specific Native American group that aligned with Pitt's British troops during the French and Indian War, which was the Iroquois Confederacy.