Pioneers first traveled in wagons along the oregon trail in
1750.
1775.
1806.
1836.

The correct answer is D. 1836

Explanation:

The Oregon Trail was a route from the Missouri River to the valleys of Oregon, this route was around 3500 kilometers and was a key trading route. This trail was first mapped in 1804, and later used by fur traders and other traders from 1811 to 1840, however during the first years the route could only be crossed on foot or by horseback. In 1836, the first wagon traveled along the Oregon Trail which increased the use of the trail as settlers, miners, ranchers, farmers, migrants and others began using the Oregon Trail. Thus, pioneers, Henry Spalding, and Marcus Whitman were the first who traveled along the Oregon Trail by wagons in 1836.

1 The Iron Curtain was a political boundary dividing Europe into two separate areas from the end of World War II in 1945 until the end of the Cold War in 1991. The term symbolizes the efforts by the Soviet Union to block itself and its satellite states from open contact with the West and its allied states.

2 he choosed it bc he wanted to choose itz his wish u can't judge him

Explanation:

hope it helps ya ItzAlex