The correct answer is A) Chandragupta Maurya.
The Asian leader that used a military of 600,000 soldiers and thousands of war elephants, cavalry, and chariots to extend the Indian Empire from Bengal to Afghanistan was Chandragupta Maurya.
Chandragupta Maurya (340 BC-297 BC) is considered to be the founder of one of the most important empires in the history of India: the Maurya Empire. He was so smart and skillful that he could unite all of the disgregated towns and villages of that region in ancient India to form one great and powerful empire. His troops conquered vast regions such as Bengal, Nepal, Afghanistan, and Kashmir.