Final answer:
Martin de Leon and Green DeWitt were empresarios, individuals who established colonies in early Texas by recruiting settlers in exchange for land.
Step-by-step explanation:
Martin de Leon and Green DeWitt are best known as empresarios in early Texas history. These individuals were granted the right to settle on land in exchange for recruiting and taking responsibility for new settlers. The system was a way for the Mexican government to populate the region and both De Leon and DeWitt founded colonies in Texas. De Leon established the town of Victoria in 1824, and DeWitt is known for founding the DeWitt Colony in 1825, which is now part of present-day Gonzales County. These empresarios played significant roles in the development of early Texas, particularly in the lead-up to its war for independence from Mexico.