By 1849 the Mormon population had increased to the point that they began to expand their colonization efforts.

There was always a vocal opposition to their colonization effort.

Leftwich dropped out of the colonization effort due to health issues.

The islands thus became the focus of colonization efforts.

These two worlds were settled by a single colonization effort in 2280.

The low gravity of Europa may also present challenges to colonization efforts.

This colonization effort failed in 1625 due to a lack of funding.

This is a colonization effort, remember, not a scientific expedition.

Some men left on military campaigns, exploratory expeditions, or colonization efforts.

This information was never made known to the general public for fear it would jeopardize all ongoing and subsequent colonization efforts.