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Math: Developed the concept of 0 decimal system.Astronomy: Calculating our position in the Solar SystemMedicine: Minor Surgeries and Giving Vaccinesthey were a very hi tech group they had the first numeral system in the world
The British Empire was the largest empire in history.
A group called the Turks.
The Han empire was invaded by nomadic Xiongnu tribesmen from the north and west of the Han Empire.
An empire is a group of people (country) under one ruler, no more no less.
A hunter-gatherer group called the Aryans. They eventually caused the collapse of the Harrappan Empire.
It is important to learn and remember terminology. It is an Empire that is a group of states under one ruler.
Math: Developed the concept of 0 decimal system.Astronomy: Calculating our position in the Solar SystemMedicine: Minor Surgeries and Giving Vaccinesthey were a very hi tech group they had the first numeral system in the world
The British Empire was the largest empire in history.
Ottoman Empire
It depends on the Islamic Empire in question. Assuming that you are talking about the Abbassid Caliphate (which is most commonly referred to as "the Islamic Empire"), the group that brought them down was the MONGOLS.
A group called the Turks.
the group that built the empire is the Aztec.
The Aztec Empire (1325 - 1521)
morocanns
The Han empire was invaded by nomadic Xiongnu tribesmen from the north and west of the Han Empire.
An empire is a group of people (country) under one ruler, no more no less.