Which two sentences explain the north's opposition to the use of slavery in the south?
the slave population increased the south's representation in congress.
northerners saw slavery as an immoral and unjust practice.
northern farmers couldn’t compete with southern plantations supported by slave labor.
southerners refused to trade slaves with plantation owners in the north.
the north believed that slavery prevented the south from using modern farm equipment.

Explanation:

The actual answer is

Northerners saw slavery as an immoral and unjust practice.

Northern farmers couldn't compete with Southern plantations supported by slave labor.

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.

social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract or agreement among them to form the society in which they live