What effects did capitalism and socialism have on the 20th and 21st centuries?

What impact did capitalism have on the 20th century?What impact did capitalism have on the 21st century?What impact did socialism have on the 20th cen

What impact did capitalism have on the 20th century?
What impact did capitalism have on the 21st century?
What impact did socialism have on the 20th century?
What impact did socialism have on the 21st century?

Examples and changes that may have happened as well would be greatly appreciated!

or:What impact did capitalism have on the 20th century?What impact did capitalism have on the 21st century?What impact did socialism have on the 20th century?What impact did socialism have on the 21st century?Examples and changes that may have happened as well would be greatly appreciated!

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