Answer:
1836
Step-by-step explanation:
The Oregon Trail was a roughly 2,000 mile long trail that pioneers traveled along, many in hopes of gold and fertile land for farming in the west. In 1836, the first wagons were put together to begin traveling. The wagons started in Missouri, reached Idaho, and eventually made it to Oregon. The trail continued to improve, and about 350,000 pioneers used it until the railroad became popular, and the use declined.
Therefore, the correct answer is 1836.