Why was Britain not invaded by Germany?

Britain was not invaded by Germany during World War II primarily due to the failure of the German Luftwaffe to achieve air superiority in the Battle of Britain in 1940. The Royal Air Force's resilience and effective use of radar technology played crucial roles in repelling German air attacks. Additionally, logistical challenges and the British Navy's dominance at sea made a successful invasion difficult. Ultimately, Hitler shifted focus to the invasion of the Soviet Union, abandoning plans for Britain.