Explanation:

The Ghadar Party was an organization founded by Punjabi Indians in the United States and Canada with the aim of securing India's independence from British rule. Key members included Lala Har Dayal, Sohan Singh Bhakna, Abdul Hafiz Mohamed Barakatullah, Kartar Singh Sarabha, and Rashbehari Bose. After the outbreak of World War I, Ghadar party members returned to Punjab to agitate for rebellion alongside the Babbar Akali Movement. In 1915 they conducted revolutionary activities in central Punjab and organised uprisings. Their presence shook the hold of the British empire and police surveillance in Punjabi villages increased in an attempt to crush the rebellion.