The answer is A. They were actually never found, they just....disappeared. There was a theory behind their disappearance as well.
The correct answer is A. I hope this helps!!
Mostly due to the ideas of Manifest Destiny. They started going westwards with the desire to span the United States from coast to coast, and then they started going worldwide. The idea behind it is that the United States were destined to help the world become free and democratic like they were so they started helping people worldwide in rebellions against colonialism or in similar affairs.
<span>The correct answer is letter A.
According to policy and population experts the best correlated hypothesis between economic and population growth is: As economic growth raises the standard of living, population increases because there is an increased demand for labor. This is the reason why there are a lot of people who migrate to more developed societies because of the opportunities it can offer thus increasing the society’s population further. <span>
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It is true, at least from what I've learned.