What were the main changes in the chalcolithic age?

The main changes in the Chalcolithic Age, also known as the Copper Age, include the beginning of metalworking with the use of copper, leading to advancements in tools and weapons. This period also saw the development of more complex societies with the emergence of larger settlements and increased social stratification. Additionally, there was a shift towards more settled agricultural lifestyles compared to previous hunter-gatherer societies.