For the seventy years leading up to 1860, the united states census counted slaves as three-fifths of a person, which was done in order to

For seventy years, the United States Census counted slaves as three-fifths of a person, which was done in order to modify the source in measuring the wealth of every state and also tax obligations will be used to measure the capacity of each state to generate wealth.

the answer is a, salt plain

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.