Who Destroyed the Japanese Economy in WW2?

As the war in the Pacific develops, the United States takes the fight to Japan itself – by crippling its economy, destroying its industry, and crushing civilian morale. To do this, American submarines and heavy bombers wage campaigns beneath the sea and above the clouds. And even 80 years later, there’s a fierce debate about which of these campaigns did more to bring Japan to its knees – perhaps even more than the atomic bombs.