The dropping of the atomic bomb on Hiroshima and Nagasaki (though they were already in line to surrender before we did that)
Around 2,000 soilders doed due to diseases spreading around
The reason why a serious natural disaster such as a flood, famine, or earthquake might lead to migration is that people might need to migrate to rebuild their lives.
<h3>How do natural disasters affect migration?</h3>
When there is a natural disaster such as a flood, famine, or earthquake people tend to lose their belongings as well as their lives.
Those who survived would be unable to rebuild their lives in the places that are still damaged and so will have to migrate to other areas where they can then go about rebuilding and regaining what they lost.
Find out more on the effects of natural disasters at brainly.com/question/13800641
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The answer is A.
Hope this helped!!
One main reason why John C Breckenridge supported the purchase of the Louisiana territory was because he thought it would held end the issue of slavery, by leaving it up to "popular sovereignty" in the new territory.