Why did Ashoka undertake the battle of kalinga? Give reasons. What destruction did it bring about ?

Ashoka undertook the Battle of Kalinga in order to annex Kalinga to his empire. He wanted to conquer Kalinga because it was a prosperous region with important ports and a powerful navy. The Kalinga war led to great destruction. Ashoka's edicts say that about 100,000 people died in this battle.