Question

why was babur successful in invading india

Answer 1

Babur did not invade India.He visited India when Dhanpat Singh an old warrior of Sikandar Lodi called upon him to wage a war against Sikandar Lodi. Dhanpat  became enraged when Sikandar abolished all old warrior chiefs and placed new and young Soldiers and warrior chiefs. 

Answer 2

He had 12,000 men and had machlock muskets that nobody had that time.