Explanation

 The Silk Letter Movement, also known as Tehreek-e-Reshmi Rumal

It was initiated by Deobandi leaders, particularly Maulana Mahmood Hasan Deobandi

This movement, active between 1913 and 1920,

They aimed to achieve Indian independence from British rule by allying with the"

• Ottoman Empire
• Afghanistan
• Germany

The letters, written on silk cloth, were intercepted by the Punjab CID, revealing the plot.