Sonar uses sound to detect objects underwater. As well as using sonar, Ballard searched for the Titanic's trail of debris.
Explanation:
Equality, self-government, and multi-tiered representation were the foundations.
Answer:
It used its wealth, its armies and its navy to defeat rival European countries and to conquer local peoples to establish its empire. However, the empire did not just rely on force. In most of the empire Britain relied heavily on local people to make it work.
