It depends on what was needed at the time, but probably things like tools and housing. Obviously considering the time we’re talking about it would be very “primitive” lol
But if you knew what you knew now you could do a lot. Just knowing that you can bake mud to make clay. Getting running water to where you live could be a game changer. It’s the key to agriculture, sanitation, etc.
Weapons are the same. Knowing something like the bow and arrow is possible will put you way ahead of sharp sticks and rocks.
It depends on what was needed at the time, but probably things like tools and housing. Obviously considering the time we’re talking about it would be very “primitive” lol
But if you knew what you knew now you could do a lot. Just knowing that you can bake mud to make clay. Getting running water to where you live could be a game changer. It’s the key to agriculture, sanitation, etc.
Weapons are the same. Knowing something like the bow and arrow is possible will put you way ahead of sharp sticks and rocks.