What was a Roman century

Military. The centuria was the pivotal tactical unit of a Roman legion after the Marian reforms of 107 BC. It originally consisted of a hundred soldiers; later 80 distributed among 10 contubernia, with support staff making up the remainder of the 100 men.

Explanation:

it is a because im a fod nigba

keeping a cash reserve because cash flow is the the movement of money through a company and if it just sits there, it wont the movement