Where was the first summit of the NAM (Non-Alignment Movement) held?

The correct option is Belgrade.

Step-by-step Explanation:

1. Understanding the Non-Aligned Movement (NAM):
The Non-Aligned Movement (NAM) was established during the Cold War era as an organization of states that did not wish to formally align themselves with either of the two major power blocs: the United States (Western bloc) or the Soviet Union (Eastern bloc). Its primary founders included leaders like Josip Broz Tito of Yugoslavia, Jawaharlal Nehru of India, Gamal Abdel Nasser of Egypt, Kwame Nkrumah of Ghana, and Sukarno of Indonesia.

2. Locating the First Summit:
The first conference of the Non-Aligned Movement, also known as the Belgrade Conference, was officially held in September 1961 in Belgrade, which was then the capital of Yugoslavia (and is now the capital of Serbia).

3. Evaluating the Options:
- Bengaluru: A major city in India, but not the host of the first NAM summit.
- Belgrade: The historic capital city where the founding leaders gathered for the first summit in 1961.
- Belgium: A Western European country and one of the founding members of NATO (highly aligned with the Western bloc).
- Belarus: An Eastern European country, not the location of the 1961 summit.

Therefore, Belgrade is the correct location of the first NAM summit.