It is diverse with a lot of different ethnic back grounds and has al ot more than one race and traditions anyway there are a lot of different races and cultures
The war changed the economical balance of the world, leaving European countries deep in debt and making the U.S. the leading industrial power and creditor in the world.
The First World War destroyed empires, created numerous new nation-states, encouraged independence movements in Europe’s colonies, forced the United States to become a world power and led directly to Soviet communism and the rise of Hitler. Diplomatic alliances and promises made during the First World War, especially in the Middle East, also came back to haunt Europeans a century later. The balance of power approach to international relations was broken but not shattered. It took the Second World War to bring about sufficient political forces to embark on a revolutionary new approach to inter-state relations.
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The answer to this question is: The magna Charta
The magna Charta is created to limit the King's power within the country. Before this document, the King's order was always considered absolute and must be obeyed. After this document, the King's orders still held a really great power, but it cannot breach what considered as basic human rights
The Korean War or conflict can be compared to the Vietnam War. The basic reason behind the United States taking a active role in these wars was to stop independent nations falling under communist control.