The answer to that is the Native Americans.
It was a significant development because it the first set of rules that anyone could see at any time so there was no excuse like oh whoops i didn't know! hope i helped
In the 17th and 18th centuries, the use of silver Spanish dollars extended from the Spanish territories in the Americas westwards to Asia and eastwards to Europe, forming the first worldwide currency
PEMDAS. (-4) - 18 - (12 + 3)
1. Parenthesis, simply what's in them.
(-4) -18 - (15)
2. Combine like terms.
-4 - 18 - 15 = -37
Hope this helped.
