How did the Louisiana Purchase change the size of the US?
In 1803 the US bought the Louisiana Territory from France for about $15 million. The deal roughly doubled the size of the country.
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- How did the Industrial Revolution change moth colors?
“During the Industrial Revolution, soot darkened trees in England, and dark-colored peppered moths became more common because they were better camouflaged, a famous example of natural selection.”
Reference: Natural History Museum, London
More from this shelf
Where did the Industrial Revolution begin?
The Industrial Revolution began in Britain around 1760, when new machines and factories transformed how goods were made and how people lived.
Why do horses have hooves instead of toes?
A horse's hoof is actually a single giant toe, the result of millions of years of evolution from small, multi-toed ancestors to a body built for running.