Britain's victory in the Battle of Britain demonstrated the courage and resilience of the country's military and its people and allowed them to remain free from Nazi occupation. It also enabled the Americans to establish a base of operations in England to invade Normandy on D-Day in 1944.
I would say that the opera component for a solo performance is called ARIA.
This is an elaborated song for a solo voice, just one voice. It can be written for the main character focusing on his/her emotions.
The term means "air" in Italian and it is connected to a melody by performed by a singer. It might be accompanied by an orchestra.
It’s the first one I believe
This is straight from the internet, "<span>The </span>causes<span> of the </span>fall of the Soviet Union<span> were many and included ethnic conflict, a lack of support for the idea of communism and economic troubles </span>caused<span> by a focus on arms. Despite reform efforts by Mikhail Gorbachev, the then leader of the</span>Soviet Union<span>, the country was never able to reorganize and rebuild."</span>
I believe it is C. This is because in communism, citizen's power is limited rather than in socialism.