The person given credit for the first modern atomic theory was John Dalton. For him, all of the objects present is made up of atoms and that these atoms cannot be destroyed and divided. Also, in this theory, compounds are made up of having two or more atoms that are combined. Although this has been the very first and old theory, it is still valid in modern chemistry.
Answer:
True, it once did. False it has one currently.
Explanation:
The only time Ancient Greek was unified under one ruler was during the reign of Alexander the Great.
I don't seem to understand what you are trying to say
