Mayan
Mayan
When we discovered Australia.
Mercury: Known to ancient civilizations. Venus: Known to ancient civilizations. Earth: Known to ancient civilizations. Mars: Known to ancient civilizations. Jupiter: Known to ancient civilizations. Saturn: Known to ancient civilizations. Uranus: Discovered by William Herschel in 1781. Neptune: Discovered by Johann Galle and Heinrich d'Arrest in 1846. Pluto: Discovered by Clyde Tombaugh in 1930 (now considered a dwarf planet).
The American Dental Association
thomas Adams was born in 1818 and died in 1905.
Aztecs, Incas, Mayan, Indian, Eskimo
The lunar cycle was first discovered thousands of years ago by early civilizations who observed the repeating patterns of the moon's phases. Records of lunar observations date back to ancient civilizations such as the Babylonians, Egyptians, and Greeks.
Bismuth was discovered around the year 1400.
they found a city that lay beneath the earth
Gold was discovered by ancient civilizations around 3000 BCE. It was likely one of the first metals to be used by humans due to its distinct color and malleability.
Noma
The makers were originally trying to make a new, cheaper alternative to rubber. It failed the rubber tests but he then had an idea, popped it into his mouth and gum was invented. Gum has been around forever. The gum was from the greeks and romans.