How did germany's attack on great britain differ from its earlier european invasions?

A. Its use of nuclear bombs marked the first time such weapons were used in Europe.
B. Its blitzkrieg tactic failed to defeat Great Britian, as it had in other parts of Europe.
C. Its small scale suggested that Germany viewed Great Britain as less of a threat than other states.
D. Its reliance on bomber aircraft resulted in more deaths than any other European attack.
I hope this helps.