What are details of u-boats

Explanation:

The Germans' most formidable naval weapon was the U-boat, a submarine far more sophisticated than those built by other nations at the time. The typical U-boat was 214 feet long, carried 35 men and 12 torpedoes, and could travel underwater for two hours at a time.

photos creat an ovveral image of the civil war

it should be a. song dynasty’s civil service examination system created an administrative bureaucracy manned by the landed aristocracy.