Why would Southerners support the Mexican American War? 1 point A) They believed it would aid in industrialization. B) They believed that Mexico had attacked the United States. C) They saw it as a means of expanding slavery to new territory. D) They believed it would bring law and order to the Oregon Territory.

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.

c or d both can be the answer

the speech revealed that eastern european countries were no threat to their neighbors, which led to the creation of the truman doctrine i think this might be correct.