Give me 5 min ill come back with the answer
It began in 1790 and ended in 1840
Maria has already opened the business, she has moved past the seed and development stage and has moved into the startup phase. This of course can share elements with the growth and development phase, but given that she is initiating hiring employees and the question does not mention expansion, she is in the startup phase.
It was to pay down their war debts from fighting the French in the Seven Years' War.