Brain. They found a tumor if my memory is right.
Thomas jefferson believed the united states did not have constitutional authority to establish the bank
Aztec and Mayan cultures, languages, arts, education, food, and other aspects have affected Europeans.
The Aztecs were the most primitive. The Incas were the second most advanced civilization. The Maya were the most advanced in writing, architecture, and mathematics. The Maya were the most sophisticated. During the mid-first millennium BCE, the Maya established a writing system. Compared to other civilizations at the time, they developed a writing system reasonably early. These societies possessed extensive knowledge of the land in which they lived and formed social institutions. Some civilizations had trained armies, such as the Aztecs, and secret guards to safeguard the populace, as with the Incas. There was minor and no metal industrialization, troops without the force of powder, no trained animals, no immunity to diseases, and a profoundly naturalistic view of the universe.
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Answer:
One of the first mechanical televisions used a rotating disk with holes arranged in a spiral pattern.
Extra:
This device was created independently by two inventors: Scottish inventor John Logie Baird and American inventor Charles Francis Jenkins. Both devices were invented in the early 1920s.
