How did the allies fight the german u-boat threat?

There were a few actions the Allies did to counter the threat of German submarines in World War I and in World War II. ... In both World War I and World War II, we used the convoy system to protect our merchant marine. Our navy accompanied our merchant and troop transport ships across the ocean

Explanation:

The House of Represenatives passed the declaration to take Gremany to the first WW1.

Explanation: From what I'm reading online, it states that the German U-Boat's sank 4 U.S. ships. Which bassically brought the House of representives to vote to bring the U.S. to the first World War with Germany. Now I'm not to sure this is the best answer I just read about the U-Boats on history.Com Hopefully this helps.

the french attack on germany was caused by the military alliance

the committees of correspondence were the american colonies’ means for maintaining communication lines in the years before the revolutionary war. in 1764, boston formed the earliest committee of correspondence to encourage opposition to britain’s stiffening of customs enforcement and prohibition of american paper money. the following year, new york formed a similar committee to keep the other colonies notified of its actions in resisting the stamp act. in 1773, the virginia house of burgesses proposed that each colonial legislature appoint a committee for intercolonial correspondence. the exchanges that followed built solidarity during the turbulent times and bring about the formation of the first continental congress in 1774.