Fill in the Blanks Pre- Culumbus ColomibiaOnline version Pre- Columbus Colombia by Diana Guzman Espejo 1 civilizations America North Colombia overland Central Inca These inhabitants left South Colombia is the only gateway to America and is assumed to have been the route pioneered by the continent's first human , who migrated from and . Some tribes , such as the , headed further south and built major , while smaller groups settled in what is now and eventually reached a high level of development . people are little known internationally because they few enduring monument s