There exist seven numbers in the roman system created around Jesus’ time, when the Roman empire was flourshing. So two single numbers had been added a zero to it and then two zeros to add up more value, but then there is thousand, and going back millenials we can bet that having plenty of something was not beyond a thousand, the numbers though had to come from an alphabet
I
The first number one looks liek a number 1 and is of course the first
V
The second number of the base is 5. So the question remains why V was selected to represent the number 5, but it is the second base before adding zero to make the number 50
X
Number 10 is the third basic number
L
The basic number 50 to increase counting
C
Number 100 is to make the counter richer
D
Why 500 is created is fun
M
1000 is a high number seen in perspective in the years before Christ who was actually from the socalled middle east.