What is colonialism? O a. a process in which people from populated areas move to uninhabited parts of the world to set up their own societies O b. a process whereby Western nations established their rule in parts of the world away from their home territories Oc. the era during which groups of adventurers began perfecting sailing technologies that allowed them to discover increasingly distant parts of the world O d. the establishment of new forms of punishment enabled by travel technology, in which penal work colonies were established in remote areas