Well an obvious answer would be slavery, depending on how late you're talking. After slavery ended, the country began what is known as the "industrial revolution". The north had already begun industrializing for a while, but in the 1870's and beyond, things ramped up quite a bit. Factories for clothes, shoes, farming equipment, packaged foods, and etc. became more popular. You also had coal mines, railroads, and steel mills. This showed the country was moving in the direction of mass production, and moving away from agricultural ways of living. This also meant child labor, which led to many child labor laws in the later years. This also meant many moved out of farming communities, and into larger, noisy, and crowded cities. Many immigrated to the US to take advantage of that, which led to some tension between communities.
Hope that helps!
I think they took over 3 continents France, Switzerland, and Istanbul
The French were control the area where many Germans and other people spoke in French or know some French. The Russians would control the Eastern part of Germany which they conquered and had more of the Slavic type of people. The Brits and Americans took the rest.
Can you further elaborate on this question what are you asking?