What are the names of the three different groups people Caesar encountered as he arrived at Britain

The three groups were the Belgae inhabit, the Aquitani and Celts (Gauls)

Explanation:

legislative branch:

one of the three branches of government divided between the senate and the house of representatives.

- creates or makes laws

- power to override a veto

executive branch:

one of the three branches of government, headed by the president.

- enforces or carries out laws

- power to veto a bill sent to it by congress

judicial branch:

one of the three branches of government, headed by the chief justice of the supreme court.

- interprets laws

- power to declare laws or actions by the government unconstitutional

the answer is a, salt plain