During which age did Homo species begin using crude rock tools?

The use of crude rock tools by Homo species is primarily associated with the Paleolithic Age, which is the earliest and longest phase of human history, representing a time when our ancestors developed basic tools out of stone. This era, also known as the "Old Stone Age," marked significant advancements in technology and lifestyle, including the creation of simple hand axes and choppers. These tools were essential for survival tasks such as hunting, gathering, and food preparation.

The Paleolithic Age is characterized by a hunter-gatherer lifestyle, where these early humans relied on their skills and proto-tools for basic needs. This period precedes the Agricultural Revolution and the subsequent ages, such as the Mesolithic, Neolithic, and Iron Ages, where more sophisticated tools and practices were developed. Thus, identifying the Paleolithic Age as the time when Homo species first utilized crude rock tools is historically accurate and reflects a key development in human evolution and tool-making technology.