Answer:
His findings encouraged settlers to move to Texas.
Step-by-step explanation:
Zebulon Pike's expedition in the southwestern part of America, which was considered illegal, made him to passed into the territory of New Mexico.
While he was later arrested during his voyage and sent to the United States - Spanish border through Texas, he realized so many things during his ordeal. Some of the things he noticed and documented was the military shortcoming of the Santa Fe post and the lucrative prospect of commercial activities with Mexico. This knowledge led to the increased idea of expansionist push to Texas.
Hence, in this case, the correct answer is "His findings encouraged settlers to move to Texas."