What were the alternatives to the use of the atomic bomb? what were the pros and cons of each?

The alternatives was to continue to fight Japan or to abandon the fight sltogether. The pros of fighting Japan would be the avoidance of destruction of major Japanese cities and the death of innocent Japanese citizens, although it is likely that the Japanese would fight till their last citizen was killed. If America abandoned the fight with Japan, they would continue to be attacked, but countless innocent lives could be spared.

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he was sent to prison on various charges for protesting south africa's policies of apartheid

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.