Answer:
True.
In pre-colonial Africa, some primitive versions of government systems were used.
The English Channel is the body of water between England (Great Britain) and France, it is connected to the Atlantic Ocean.
Being a body of water, it can't be a water way - so the answer b) is false.
In fact, from the description above you know that the answer a. an extension of the Atlantic Ocean between England and France is true.
It allows the grass and plants time to replace themselves when the animals migrate.
They give us informations about our ancestors and how did they live and what did they do and than compare it to present way's of life.