Concept:The Chittagong Conspiracy was an armed revolutionary uprising against British colonial rule in India.
Explanation:It was organised by the Chittagong branch of revolutionaries.
Their leader was Surya Sen, popularly known as Masterda.
On
18 April
1930, they raided the Chittagong armoury.
They declared an 'Indian Republican Army' and issued an independence proclamation.
On
22 April
1930, they fought a battle at Jalalabad hill.
About
12 revolutionaries died in that clash.
Thus, the Chittagong Conspiracy was led by Surya Sen.
Answer:Surya Sen