Final answer:
The Geologic Period named for a tribe known for fighting with hammers is the Paleolithic Age, which is characterized by the use of stone tools.
Step-by-step explanation:
The Geologic Period named for a tribe known for fighting with hammers is the Paleolithic Age. The Paleolithic Age is the oldest section of the Stone Age and is characterized by the use of stone tools. During this period, our distant pre-human ancestors began using stone tools for various purposes.