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Answer: The attack occurred in relatively shallow water, allowing many of the damaged ships to be repaired and later returned to service.
The attack on Pearl Harbor on December 7th, 1941, dealt a major psychological blow to the United States, and caused the deaths of many servicemen.
However, regarding damage to the fleet itself, the attack wasn't a crippling blow.
First, some of the ships in the Pacific Fleet were out to sea, and were unaffected by the attack.
While many of the ships moored in Pearl Harbor were damaged to some degree, the shallow water of the harbor allowed for the recovery and repair of almost all of them.
Only three ships - the battleships Arizona and Oklahoma, and the target ship Utah - were total losses (the Utah survived the attack but sank later while being towed towards a repair location).
All other ships that were hit during the attack (a total of 29) were repaired and returned to service.
Additionally, 69 ships moored in the harbor weren't even hit during the attack.
In the late 1800s, people in many parts of the world decided to leave their homes and immigrate to the United States. Fleeing crop failure, land and job shortages, rising taxes, and famine, many came to the U. S. because it was perceived as the land of economic opportunity. Others came seeking personal freedom or relief from political and religious persecution. With hope for a brighter future, nearly 12 million immigrants arrived in the United States between 1870 and 1900. During the 1870s and 1880s, the vast majority of these people were from Germany, Ireland, and England--the principal sources of immigration before the Civil War. That would change drastically in the next three decades.
Both had major rivers and dependable flood
b is the most probable answer to that question
