For example, is America and capitalism in Europe the same?
Or is the capitalism in the middle eastern countries and African countries the same?
In which country is capitalism better implemented?
From elementary economics that I learned, the father of capitalism has been USA and till today even when I am grown to really understand how countries work, I still havent see any country beat the United States. Its in that country you can afford pursue your interest to the fullest and government is taking the back role to only regulate the activities and ensure the workers are treated fairly. A country where an individual can own estates and responsibility to community is not hanging over his head just because he is from there.
I have taken both macro and microeconomics. You should stop idolizing America. Firstly, America newver did better than the western countries, per capita GDP, America only lead in the 1940-50s when New Deal progressives were in charge. We've been on a steep decline since the Baby Boomers embraced greed and a "free market." They live in a world of delusion where Reagan was a good president. Never mind his 4 year recession, never mind his tough military mentality nearly destroyed the world in 1983. He was caught betraying his country for his own political gain, yet people with short memories think the economic philosophies of a bad B movie actor are somehow valid.
The Democrats even idolize him, it's because they've worked hard to corrupt what it means to be a progressive. You'd be hard pressed to find an establishment Democrat that agreed with the 1912 Progressive party platform, the founding document of progressivism.
America became a wealthy nation during the 35 years conservatives were excluded from office after causing the Great Depression, things have been getting worse since Nixon. America was built on mixed social democratic mixed economic principles. America is declining because they embrace laissez-faire and neoliberal economics.