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Period: 200 to 900
Maya
Location: Central America, Yucatan Peninsula
Accomplishment: They created a 365 day calendar, along with a sacred 260 day one -
Period: 320 to 550
Gupta Empire
Location: It was around North Eastern India
Accomplishment: They standardized gold and silver coins to pay for things. -
Period: 500 to 1453
Byzantine Empire
Location: It covered lots of Italy, Greece, and Turkey in Europe
Accomplishment: They split from Roman Catholic Church and created Eastern Orthodox -
Period: 500 to 1200
Ghana
Location: Western Africa, in between the Sahara and the Sahel
Accomplishment: Rulers were chosen Matrilineally, or through the mother's blood line -
Period: 618 to
Imperial China (Tang-Ming Dynasties)
Location: It covers a lot of eastern Asia
Accomplishment: They invented gunpowder, rockets, and also cards -
Period: 632 to 1258
Muslim Empire (Rashidun - Abbasid Caliphate)
Location: The Arabian Peninsula, Asia
Accomplishment: They created the Arabic numerals and Algebra -
Period: 794 to
Japan (Heian-Ado Periods)
Location: Japan, its kinda out there on an island all alone within Asia
Accomplishment: They created lots of games and activities for leisure during the Heian period -
Period: 800 to
Holy Roman Empire
Location: Around Western and Central Europe
Accomplishment: They had Pax Romana, which was 200 years of peace -
Period: 1200 to 1533
Inca
Location: Along Chile and Peru in South America
Accomplishment: They had a bunch of knotted ropes called quipus that allowed them to memorize mesages -
Period: 1240 to 1450
Mali
Location: Roughly the same location as Ghana, western Africa, just extended east a bit more as well
Accomplishment: Mansa Musa was one of the richest emperors in the world and paid for everything with gold -
Period: 1428 to 1519
Aztec
Location: It was in Central America, but closer to Mexico then the Maya was
Accomplishment: They created the Sun Stone, or Piedra de Sol, which worked as a calendar and as a prediction for how the world ended and how it would end next ( I learned this in spanish) -
Period: 1450 to
Songhai
Location: It covered the same area as Mali and Ghana, western Africa, but it was more expanded
Accomplishment: They weren't strict Muslims