A historical source is valid when it:
A. was written by a person who observed an event.
<h3>What is a historical document?</h3>
This is the term that is used to describe a particular document that tells us of the trail of events that have occurred in the past. That is the events that have the timeline of having happened over a long period of time.
They are most valid when the event is being talked about by a person that has first hand knowledge of what happened instead of telling stories of what they heard.
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The reason there was slavery in the United States is because there was more work to do than people to do it. The North's population grew quicker than the South's, so they could become "moral"quicker
The New Deal, implemented by Franklin D. Roosevelt, was a way to help the American economy recover during the Great Depression. When it comes to the Southern US, FDR made programs that were aimed at providing relief for this part of the country. One of the most famous ones was the Agricultural Adjustment Act.
This act paid farmers to not make crops. The reason why the government did not want farmers producing more crops is because their was a surplus of several goods in the economy. When there is a surplus, the cost of these goods decreases, meaning farmers make less money of their products. By creating the Agricultural Adjustment Act, FDR helped to increase the price of foods made by farmers, allowing them to generate a greater profit.
Answer:
The theory of evolution is the idea of species changing over time through the process of natural selection.