Answer:
Britain's blockage across the nothern sea and the English Channel cut the flow of war supplies, food and fuel, to Germany during WW1. Germany replied by destroying ships that were supplying the material. In the end of the war all the submarines the German used impacted the war. German submarines sank a total of 6,394 marines displacing a combined total of 11,948,702 tons. Reciprocating 229 submarines for an average of nearly 52,000 tons sunk per submarine.
Step-by-step explanation: