fire
The development and use of tools (ie, animal bones as knives, rocks as hand-axes, etc.)
The invention of wheels was in the New Stone Age (Neolithic).
the wheel
agriculture
beer
wheel
A knife isn't actually an invention. And it was certainly not invented my Americans. It was even used in the stone age.
Invention of Fire by H. erectus, invention of art by modern man, and invention of agriculture by modern man.
the invention of tools, mastery of fire, and the development of languages
Agriculture: the people of the neolithic became farmers and began to live a more settled lifestyle.
The invention of tools helped the Stone Age people hunt larger animals more safely
the wheel was invented in the stone age, of course.....
One of the most useful inventions made by early Stone Age people was the development of tools made from stone, such as hand axes and arrowheads. These tools revolutionized hunting, cooking, and crafting activities, improving overall survival and efficiency. They also laid the foundation for future advancements in technology and tool-making.