Answer:
• Loss of life
The atomic bombings of Hiroshima and Nagasaki led to an estimated loss of life of between 129,000 and 226,000 people. Even though there were some soldiers killed in the two cities, most of this figure was of civilians.
• Infrastructure damage
The cities of Nagasaki and Hiroshima suffered such Infrastructural damage that significant portions of the cities were levelled by the bombings such that industrial production was not possible many years later.
• Radiation poisoning.
The number I quoted above as the number of people who died was not only from the actual bombing. It is estimated that about half of that number was as a result of radiation poisoning from the effects of the atomic bomb.
• Cancer increase
Subsequent research into the effects of the bombings showed that cancer increased in the survivors of the bombings as a result of being exposed to the radiation from the atomic bombs.
• Surrender
The bombs we're so devastating that the Japanese government was forced into surrendering to the U.S. in order to avoid more bombs being dropped thereby ending the most destructive human conflict in history, the second world war.
