How did the expansion of the United States (getting more land in the west such as the Louisiana Purchase and land gained from the Mexican War) create tension or conflict between the North and the South? In other words, what did they argue about?

They argued about whether the land would be union territory or confederate territory

Explanation:

the industrial revolution pushed the world into modern industrialization. it changed the course of history profoundly. it caused rapid urbanization and pushed cities and countries into development. the industrial revolution began in great britain with a series with new inventions which led to the creation of machines and mass production.

this caused the country to gain wealth and money and become an international superpower. it improved transportation and manufacturing inside the country, pushed people to live in urban areas and britain to become the most powerful nation in the world for a while.