Question

The MAIN reason the attack at Pearl Harbor was so damaging is because at the time of the attack

Answer 1

It could be argued that the main reason the attack at Pearl Harbor was so damaging is because at the time of the attack "nobody was prepared," since it took American troops longer than it should have to retaliate and return fire. 

Answer 2

It took time because nobody was prepared to fight they were just minding there own business then Japan attack us.