What was the name of the political party launched by Subhash Chandra Bose in 1939 after he resigned from the presidency of the Indian National Congress?

Introduction / Context:
This question checks knowledge of the Indian freedom struggle and key organisations formed by its leaders. Subhash Chandra Bose was a prominent nationalist who differed with some policies of the Indian National Congress. Understanding which party he founded after stepping down from Congress leadership is important for modern Indian history exams.

Given Data / Assumptions:
- The leader mentioned is Subhash Chandra Bose.
- The year is 1939, after his resignation from the Congress presidency.
- The question asks for the name of the party he launched.
- Options list several parties, some real and some stylised or incorrect forms.

Concept / Approach:
After ideological differences within the Indian National Congress, Subhash Chandra Bose formed a new political grouping to pursue a more radical path to independence. This group was called the All India Forward Bloc. It aimed to consolidate anti imperialist forces and press more aggressively for freedom. The other named parties in the options either existed under different leaders or are not historically accurate in this context.

Step-by-Step Solution:
Step 1: Recall important organisations connected with Bose, including the Forward Bloc and the Indian National Army. Step 2: Link the year 1939 with internal disputes in the Congress and his resignation from the post of president. Step 3: Remember that soon after this, he launched the All India Forward Bloc within the Congress, which later acted as an independent force. Step 4: Check the options and locate All India Forward Bloc among them. Step 5: Conclude that All India Forward Bloc is the correct answer.

Verification / Alternative Check:
Another way is to distinguish between political parties and military organisations. Azad Hind Fauj or Indian National Army was Bose armed force created later outside India and is not a political party. The party that he formed within the political sphere was the All India Forward Bloc. Historical accounts of 1939 events consistently mention this party, confirming the choice.

Why Other Options Are Wrong:
Communist Party of India was formed earlier with Marxist ideology and was not launched by Bose in 1939.
Azad Bengal Fauj in the options sounds similar to Azad Hind Fauj but is not the correct name and in any case refers to an army, not a political party of 1939.
Socialist Party of India emerged from other socialist leaders and not specifically from Bose at that time.
Swaraj Party was formed earlier in the 1920s by leaders like C R Das and Motilal Nehru, not by Bose in 1939.

Common Pitfalls:
Students often confuse the All India Forward Bloc with the Indian National Army because both are linked to Subhash Chandra Bose. Another error is to pick any party whose name sounds revolutionary without paying attention to the year and context. Keeping a simple timeline of key leaders and their organisations helps to avoid these mistakes.

Final Answer:
The correct answer is All India Forward Bloc, the party launched by Subhash Chandra Bose in 1939 after leaving the Congress presidency.