What was the Wilmot Proviso? a bill which limited the impact of the Mexican-American War on slavery
the Compromise of 1850
a bill allowing Canadians to own land in the south
a major battle of the Civil War

The Wilmot Proviso was designed to eliminate slavery within the land acquired as a result of the Mexican War (1846-48). Soon after the war began, President James K. Polk sought the appropriation of $2 million as part of a bill to negotiate the terms of a treaty.

Explanation:

So I believe the answer is A; a bill which limited the impact of the Mexican-American War on slavery  the Compromise of 1850.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.

thomas jefferson is the answer