इ. स. 1919 मध्ये ब्रिटीश सरकारने घटनात्मक सुधारणा दिल्या कारण
अ. क्रांतीकारांच्या चळवळी मधून भारतीयांच्यात असंतोष वाढला
ब. काँग्रेस व मुस्लीम लीग यांच्यातील युती
क. जहाल व मवाळ यांच्यातील युती
ड. पहिल्या महायुद्धाने निर्माण केलेली राजकीय परिस्थिती

The correct answer is Option D (All of the above are correct).

Key Points:
• The Government of India Act 1919 (Montagu-Chelmsford Reforms) was enacted due to multiple compounding national factors:
• Surge in revolutionary activities created widespread discontent against colonial policies (Statement a).
• Lucknow Pact of 1916 brought the Indian National Congress and the Muslim League together on a unified constitutional demand (Statement b).
• Lucknow Session (1916) reunited Moderates and Extremists into a single Congress front (Statement c).
• Economic hardship, Home Rule Movements, and India's vital assistance during First World War forced Britain to concede political reforms (Statement d).
• Edwin Montagu made his landmark August Declaration on 20 August 1917 promising progressive realization of responsible government in India.
• Revision Note:
• 1919 Constitutional reforms resulted from revolutionary unrest, Congress-League pact, Moderate-Extremist reunion, and WWI political pressures.