The correct answer should be Mexico. Canada was north while China was on a completely different continent that had nothing to do with the railroad. Mexico became more accessible because the railroad went as far west as Nevada and California which were Mexican for a long time.
Unclear question, however I inferred you referring to the country–Democratic Republic of Congo.
Explanation:
Sadly, the Democratic Republic of Congo has been faced with severe economic challenges for decades. This African Nations has an economy that thrives on agriculture. However, due to decades of civil unrest in the country it has been faced poor economic progress.
For example, commenting on the economic challenges of the country, the World Bank states that majority of the country's population (64%) lives on less than $1.90 a day.
I’m not sure if this is correct but i think it is c but you might want to keep looking
<span>New immigrants shape the architecture of US cities by bringing their own style of architecture that may be distinct to their own culture. For example, during the European colonization of the US, the American architecture was heavily influenced by European architecture such as English revival architecture.</span>
