Submarines are highly efficient War machine. It is easy to attack the enemies and can hide easily.
<u>Explanation:</u>
20 to 30 sailors on submarines can cause more damage than 1000 soldiers on the battlefield. Usually, Submarines operate during the night. Germans mostly used advanced submarines which led them to attack US submarines effectively.
They called submarines as U-boats means underwater boats. submarines usually travel on the surface of the water and can go downwards to a limited extent. Submarines use a diesel engine for high surface speed and for long travel.
Companies grew and processed food and they helped to teach households to survive on rations.
A popular model used to illustrate the concept of opportunity cost is called a. the production possibilities frontier.
The cause of The Thirty Year War is that the Holy Roman Empire had conflict<span> with the Protestant. </span>France <span>fought </span>Spain<span> and the Holy Roman Empire for Europe Leadership. The effect of the war is that Sweden,</span>France<span> and their allies gained new territory.</span>
