kivilajeista

Kivilajeista, also known as "stone age" in English, refers to the period in human history characterized by the use of stone tools. This era is typically divided into three main phases: the Lower Paleolithic, Middle Paleolithic, and Upper Paleolithic. The Lower Paleolithic, which began around 2.6 million years ago, is marked by the use of simple stone tools such as hand axes and choppers. The Middle Paleolithic, around 300,000 to 30,000 years ago, saw the development of more sophisticated tools like spear points and scrapers. The Upper Paleolithic, from around 40,000 to 10,000 years ago, is known for its advanced tools, including needles, awls, and intricate carvings. During this time, humans also began to use fire and develop more complex social structures. The Stone Age ended with the advent of metalworking, which allowed for the creation of more durable and versatile tools. The Stone Age is a crucial period in human history, as it marks the beginning of tool use and the development of human culture.