The English Channel: The Channel is a narrow sea passage which separates England and France and connects the Atlantic Ocean and North Sea.
The Dee estuary: A small sea ( in Irish Sea) where the Dee River enters.
"The Act of Union of 1801": In 1801 the English Parliament passed an act by which Scotland, Wales and the Kingdom of England were constitutionally joined as the Kingdom of Great Britain.
Gaelic: It is one of the Celtic Language, and is spoken in parts of the Highlands.
The "backbone of England": It refers to the Pennies, the board ridge of hills.
Lead ore: British lead ores have been worked since pre-Roman times. It contains silver.
China clay: The deposits of china clay in Cornwall are of great economic value.