Many historians say nothing much changed after the War of 1812 but many things did change.
After the Revolutionary War, Loyalists from New York and New England moved up to around Cornwall and Toronto, Ontario and many settled in islands in the St. Lawrence River. After the 1812 War many of those islands went from Canada to the U.S. and vice versa. Loyalists on the islands went to bed one night thinking they were subjects of the Queen and awakened the next morning to find out they were Back in the USA
My boss at work was Korean. He said he went to bed in S Korea one night and woke up the next morning to see Communist flags flying everywhere.
That imagery stuck with me for years and came back strongly when Newt Gingrich’s efforts swung control of Congress over to Republicans for the first time in 35 years. I felt like there were freedom flags flying everywhere, and much like the Chinese gathering at Tienanmen Square, was a little baffled.