Final answer:
The ability to communicate using symbols and speech allowed anatomically modern humans to develop and advance in human culture. Language enabled them to share knowledge, coordinate tasks, communicate abstract ideas, and pass information to future generations.
Step-by-step explanation:
The ability to communicate using symbols and speech made it possible for anatomically modern humans (AMH) to develop and advance in various aspects of human culture. Language allowed AMH to share knowledge, beliefs, and attitudes, leading to the accumulation of shared culture within human groups. They could coordinate tasks, work efficiently in groups, communicate abstract ideas, and pass important information to future generations. Additionally, the emergence of language also gave AMH a major advantage over other animals in terms of survival and adaptation.