Why were U-boats so dangerous for England? a. England had the biggest Navy among the Allies and lost the most men from U-boat
attacks.

b. U-boats were destroying ships that brought food and supplies to England to starve their citizens.

c. England was running out of money because their ships kept getting destroyed by U-boats.

d. U-boat torpedoes could reach the English shores and endangered thousands of civilians.

d. U-boat torpedoes could reach the English shores and endangered thousands of civilians.

Explanation:

One of the biggest dangers was of U-boat attack, when even a single boat could wipe out an entire convoy, provided that the boat was able to surface and attack using its deck gun. The mariners were in danger from the moment they lost view of the land.

what are local authorities doing to fix the problem

explanation:

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.