The Industrial Revolution made machine based manufacturing more common, and increased the population and average income. Instead of farming, people came to cities to work. Women and children worked in factories as well. Those are the effects that changed the United States.
Along the decriminalization of Christian worship during the rule of emperor Constantine, most of the territory of the Empire had Christian areas; amongst them, present Italy and Greece.
creation expansion and interaction of political systems
The 25th President of the United States was William McKinley.
McKinley serves from 1897 until his death by assassination in 1901.
McKinley was a Republican who supported America's new Imperial efforts. He was assassinated by Polish-American anarchist Leon Czolgosz and was succeeded as President by his Vice-President, Theodore Roosevelt.