What invention of brunelleschi's made building the great cathedral's dome possible? how was it used?

During the growth of colonial america, people saw the need for a colony between south carolina and the spanish in florida. james oglethorpe and 19 settlers were told to start the colony of georgia. which coastal city did oglethorpe and his settlers found? a. jamestown, virginia b. savannah, georgia c. st. augustine, florida d. atlanta, georgia