What were the key characteristics of the Homo sapiens ancestor that allowed it to evolve into Homo sapiens?

There are several characteristics that have been suggested as key to the evolution of Homo sapiens from an earlier ancestor. Some of the most important characteristics include:

1. Increased brain size and cognitive abilities: Homo sapiens have a larger brain size and more advanced cognitive abilities than many of our evolutionary ancestors. This likely played a key role in our ability to develop and use language, create and use complex tools, and adapt to different environments.
2. Bipedalism: Homo sapiens are bipedal, meaning that we walk on two legs rather than four. This adaptation likely allowed our ancestors to cover longer distances and explore a wider range of environments.
3. Increased social and cooperative behaviors: Homo sapiens are known for our highly developed social and cooperative behaviors. This may have helped our ancestors to survive and thrive in a wide range of environments.
4. Improved communication skills: Homo sapiens have highly developed language and communication skills, which likely played a key role in our evolution. This allowed us to share information, cooperate, and form complex societies.
5. Technological innovations: Homo sapiens have a long history of developing and using technology to adapt to and shape our environment. This may have been an important factor in our evolution and success as a species.