PLEASE HELP BEING TIMED WILL MARK BRAINLIEST: Which changes took place during the Second Industrial Revolution? Check all that apply.

1 The first settlers arrived in the Pacific Northwest.
2 The country was divided during the Civil War.
3 Businesses and industries greatly developed.
4 Factories used new kinds of machines.
5 Railroad lines stretched to the west.

 Pacific Fur Company mogul John Jacob Astor establishes Fort Astoria, the first permanent US settlement on the Pacific Coast. He later becomes the country's first millionaire. Hudson's Bay Company establishes Fort Vancouver, which becomes the most prominent European presence in the Northwest.  During the Civil War, the country was divided between the North (Union States) and the South (Confederate States).

Explanation:

slavery because it wasnt a role of government