Why was the idea expressed by Abraham Lincoln In this speech significant? O A.
It was the first time Abraham Lincoln spoke about slavery.
OB.
The speech began Abraham Lincoln's run for the presidency.
OC.
It was the first time someone expressed the idea that the Union could dissolve.
OD. People at that time were still trying to compromise on the issue of slavery.

the answers are excess supply, and fall

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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.

the answer is a

explanation: