The second world war was arguably the most significant period of the 20 th century. it brought about major leaps in technology and laid the groundwork that permitted post-war social changes, including the end of european colonialism, the civil rights movement in the united states, and the modern women’s right movement, as well as the programs for exploring outer space.the primary combatants were the axis nation (nazi germany, fascist italy, imperial japan and their smaller allies and the allied nations), the union of soviet socialist republics and the usa. the allies were the victors. the two superpowers, the usa and ussr, emerged from world war ii to begin a cold war write each other that would define much of the rest of the century.

questions:
1. what is the passage about?
2. when was the world war ii happened? 3. what are the impacts after world war ii end?
4. find the structure of that passage?
5. what is the synonym of "emerged"?​