Question

What new weapon made Allied leaders worry about the cost of invading the Japanese mainland?

Answer 1

Atomic bombs

Shortly after the Allied powers had victory in driving Germany in the European field, immediately Allied power shifted their attention to how to conquer Japan in the Pacific theater.

However, rather than involving in accidents from both the Allied and Axis authorities, the US government viewed the usage of the atomic bomb as the best alternative.  The US government thought that this atomic bomb would result in less accidents and the faster way to close World War II. This weapon totally transformed the way the Allied powers imagined about their policy against Japan.

Answer 2

The correct answer to the question is Option c- Atom bombs.

The new weapon that made Allied leaders worry about the cost of invading the Japanese mainland are the atomic bomb.

But they were looking for an alternative, which would have finished thousands of lives and trillions of dollars.

Instead, atomic bomb was the best solution, even with radiation fallout.