After the Second World War, the world went through significant political changes that led to the division of power between two major superpowers, the United States of America (USA) and the Union of Soviet Socialist Republics (USSR). This division, known as the Cold War, shaped the political landscape of the post-war world.


The correct answer to the question is option 'D' - USA and USSR. Let's elaborate on why this answer is correct:


- The USA emerged from World War II as one of the most powerful countries in the world.
- It had a strong economy, a robust military, and played a significant role in the defeat of the Axis powers.
- The USA promoted democratic values and capitalism as the preferred economic system.


- The USSR was also a major power that emerged from World War II.
- Led by Joseph Stalin, the USSR had a powerful military, a strong industrial base, and a communist regime.
- The USSR aimed to spread communism and establish satellite states in Eastern Europe.


- The USA and the USSR became ideological rivals and engaged in a long-lasting conflict known as the Cold War.
- The Cold War was characterized by political, economic, and military competition between these two superpowers.
- Both countries sought to expand their influence and prevent the other from doing the same.


- As a result of the Cold War, the world became divided into two blocs, each led by the USA and the USSR.
- The USA formed alliances with countries that shared its political and economic ideologies, such as Western European countries and Japan.
- The USSR established its sphere of influence by creating satellite states in Eastern Europe, including Poland, Hungary, and East Germany.


- The division of the world into these two blocs created a bipolar international system, where countries aligned with either the USA or the USSR.
- This division led to political tensions, proxy wars, and an arms race between the two superpowers.
- The USA and the USSR competed for global dominance and influence, leading to significant political and military conflicts, such as the Korean War and the Cuban Missile Crisis.


In conclusion, after the Second World War, the world was divided into two major blocks: the USA and the USSR. This division was a result of the Cold War and had a profound impact on global politics, leading to political tensions, conflicts, and an arms race between the two superpowers.