The first force of nature which primitive people possessed?

The first force of nature that primitive people were able to master is fire.
This event happened due to receiving fire from a lightning strike.
Later, people began to notice the formation of sparks when hitting stone surfaces.
This event became one of the key factors in the further development of mankind, since with its help it became possible to more effectively protect your tribe and people from wild animals and other tribes.
Due to the preparation of food, the average life expectancy of primitive people has increased from 18-20 years to 25-30 years.