So you didn't need to carry around money with you. This was prior to the introduction of credit cards.
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The first printed checks appeared in 1762, courtesy of a British banker named Lawrence Childs.
checks and balances and separation of powers
The use of line, swirls, dashes, dot, cells, checks, or any other pattern to fill in various areas of a drawing to create a design concept. But to really understand it, you'd need to see a picture of it.
Barron de Montesquieu originally thought of the idea for checks and balances. :)
The US government has a system of checks and balances.