Is true that when Sparta was faced with the need for more land it sent its people out to start new colonies?

Yes, it is true that Sparta, when faced with the need for more land, sent its citizens to establish colonies. This practice was part of their strategy to expand their territory and resources, particularly during times of population growth or military pressure. Unlike other Greek city-states, Sparta was more focused on maintaining its military strength and societal structure, often establishing colonies primarily for agricultural purposes to support their economy.