Answer:
Option: Abundant resources
Free land.
Explanation:
Oregon attracted settlers because of abundant land, fertile soil, and mild climate. The rich fertile lands of Oregon brought thousands of pioneers. People from Missouri, Indiana, and Illinois found the rich farmland in areas like the Willamette valley persuasive. Trappers also attracted because of the abundant fur-bearing animals. The land was free to those who could make it the Oregon Territory. People began to assemble their belonging and took the trail in wagons pulled by oxen.