The correct answer is B: The population of western states and territories increased steadily.
From 1860 to 1900, there were several changes in the United States. One significant result was the steady increase in the population of western states and territories. This was due to various factors, such as the completion of the transcontinental railroad in 1869, which made it easier for people to migrate to and settle in the West.
The availability of land through the Homestead Act of 1862 also attracted people to the western states. This act provided individuals with the opportunity to claim and own land if they met certain requirements, such as living on and improving the land for a specified period of time.
The population growth in the western states and territories during this period had significant implications for the development of the United States as a whole. It led to the establishment of new towns and cities, the growth of industries, and the expansion of agriculture in these regions.
In summary, the result from the changes seen from 1860 to 1900 was the steady increase in the population of western states and territories. This growth was driven by factors such as the completion of the transcontinental railroad and the availability of land through the Homestead Act.