What happened in the past in very different circumstances won't be all that informative. Differences in education, environment, technological requirements and capacities, different world-views, different superstitions, native populations (or lack thereof), medical practices, air gravity and radiation.
Moreover, colony is a soft boundary word. I daresay that the United States (former European, now independent Colony) could survive without external trade if it came to that..what would it take for a colony on another planet to be self-sufficient? Minimally, the ability to produce items required for survival (e.g., airtight living quarters and vegetable gardens, energy, oxygen, etc).
Moreover, colony is a soft boundary word. I daresay that the United States (former European, now independent Colony) could survive without external trade if it came to that..what would it take for a colony on another planet to be self-sufficient? Minimally, the ability to produce items required for survival (e.g., airtight living quarters and vegetable gardens, energy, oxygen, etc).