States in the last 100 years have increased, hope this helps :)!!
hi
A company with a natural monopoly might be the only provider or product or service in an industry or geographic location. Natural monopolies are allowed when a single company can supply a product or service at a lower cost than any potential competitor but are often heavily regulated to protect consumers.
<span>The Sahara desert separated the empires of Ghana and Mali from the trading center of Egypt.</span>