What colonies were founded by Britain in order to stop France and Spain from settling the land?

Britain established several colonies to curb French and Spanish expansion in North America, notably the colonies of Virginia and the Carolinas. These colonies were strategically located to act as buffers against French territories to the north and Spanish settlements to the south. Additionally, the establishment of Georgia in 1732 was aimed at preventing Spanish incursions from Florida. Overall, these colonies served both economic and military purposes in the broader context of colonial competition.