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The Republic of North Macedonia is the only country in mainland Europe to have naturally occurring rubies. They can mainly be found around the city of Prilep. Macedonian rubies have a unique raspberry color. [12] A few rubies have been found in the U.S. states of Montana, North Carolina, South Carolina and Wyoming. [13] Spinel, another red ...
Some gemstones that are popularly or historically called rubies, such as the Black Prince's Ruby in the British Imperial State Crown, are actually spinels. These were once known as "Balas rubies". The quality of a ruby is determined by its color, cut, and clarity, which, along with carat weight, affect its value. The brightest and most valuable ...
Territorial evolution of North America of non-native nation states from 1750 to 2008. The 1763 Treaty of Paris ended the major war known by Americans as the French and Indian War and by Canadians as the Seven Years' War / Guerre de Sept Ans, or by French-Canadians, La Guerre de la Conquête.
The aquatic toothed bird Hesperornis is the only known Cretaceous bird whose remains are found with any frequency in North America. [82] Near the end of the Cretaceous, the Western Interior Seaway began to withdraw. This regression would end up resulting in both halves of North America reuniting.
The History of North America encompasses the past developments of people populating the continent of North America. While it was commonly accepted that the continent first became inhabited by humans when individuals migrated across the Bering Sea 40,000 to 17,000 years ago, [ 1 ] more recent discoveries may have pushed those estimates back at ...
Fossil footprints show humans in North America more than 21,000 years ago, the earliest firm evidence for humans in the Americas and show people must have arrived here before the last Ice Age.
(Click to zoom) See legend below This is the legend for the North American geological map above. Geologic map of North America. The geology of North America is a subject of regional geology and covers the North American continent, the third-largest in the world. Geologic units and processes are investigated on a large scale to reach a ...
The Massachusetts Bay Colony French settlements and forts in the so-called Illinois Country, 1763, which encompassed parts of the modern day states of Illinois, Missouri, Indiana and Kentucky) A 1775 map of the German Coast, a historical region of present-day Louisiana located above New Orleans on the eastern bank of the Mississippi River Vandalia was the name of a proposed British colony ...