Why did early man use tools and weapons?

There is a strong similarity between the marks their tools made and the marks on fossil animal bones, indicating that early humans used stone tools to butcher animals by at least 2.6 million ... Control of fire provided a new tool with several uses—including cooking, which led to a fundamental change in the early human diet. read more

Early humans in East Africa used hammerstones to strike stone cores and produce sharp flakes. For more than 2 million years, early humans used these tools to cut, pound, crush, and access new foods—including meat from large animals. read more