60
They developed a writing system.
Our number system is based on the number ten, and as a result, it is called the decimal system.
metric
They developed a writing system.
The Mayan number system is vigesimal (based on twenties)The Roman number system is decimal (based on tens)
The metric system is based on the number 10.
The metric system, based on the number 10.
the Mesopotamians used a type of currency called the shekel im not sure but i beleived they used another coin called the mina not sure what its worth. the Mesopotamians used a base sixty number system i believe 1 mina was worth 180 grains there is a reference to it in the code of hammurabie
Decimal system
The decimal number system.
The Mesopotamians
The Arabic system