Industry has affected population in the Americas in important ways. It has affected which countries end up with larger populations (or population densities) and it has affected where people live within their countries.
Some countries of the Americas have attracted many immigrants. Especially in the late 19th and early 20th centuries, the immigrants were often attracted to industry. For example, many of the immigrants who came to the United States from places like Italy and Eastern Europe were attracted by the fact that America’s industry was booming. Industrialization meant that even unskilled immigrants would have a good chance at finding jobs. This allowed the population of the US to boom. Thus, countries that have had industry have been more likely to attract immigrants, causing them to have higher population densities.
In addition, industry has affected where people live within countries. Before industrialization, the United States was a rural country. After industrialization, it became an urban country as people moved to the cities to find jobs. The same is true of other countries in the Americas as they industrialized. People naturally move to industrial centers to get jobs.
In these ways, industry affected population patterns both across countries and within them.