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.
Answer:
The Nazi usages of the term Lebensraum were explicitly racial, to justify the mystical right of the racially superior Germanic peoples (Herrenvolk) to fulfill their cultural destiny at the expense of racially inferior peoples (Untermenschen), such as the Slavs of Poland, Russia, Ukraine, and the other non–Germanic .
The Cheronobyl disaster or known as the Cheronobyl accident was a disastrous nuclear accident happened on April 26, 1986 in the Chernobyl Nuclear Power Plant near Pripyat in Northern Ukraine in what was then included in the Ukraine Soviet Socialist Republic of the Sovient Union (USSR).
C egyptians did it first. <span />