The metaphor in this statement is "the great millstone" it kind of qualification word it express how big the time was.
But in reality, millstone doesn't even have a relationship with the time.
So "the great millstone" is a metaphor.
The scientific revolution brought us a renewed understanding of humanity and our place in the universe, new scientific equiptment, and new laws as a basis for future scientific discovery.
Se realizaron muchos avances en la metalurgia y la fabricación de herramientas en toda la antigua África. Estos incluyen máquinas de vapor, cinceles y sierras de metal, herramientas y armas de cobre y hierro, clavos, pegamento, armas de acero al carbono y bronce y arte.
espero que esto ayude =)
Many advances in metallurgy and tool making were made across the entirety of ancient Africa. These include steam engines, metal chisels and saws, copper and iron tools and weapons, nails, glue, carbon steel and bronze weapons and art
I hope this helps =)
It was a stone tool used to make tools
Answer
NAACP- national association for the advancement of colored people
