Johann gutenberg's invention was the a. crossbow b. printing press c. microscope or d. telescope

Johann Gutenberg's invention was the printing press. Option B would be your best answer.

Explanation:

What makes the other answers incorrect:

The crossbow was made by the Chinese way before Gutenberg's time.

Zacharias Janssen is credited for the microscope.

Hans Lippershey is credited for the telescope.

I Hope this helps.

“the battle of stalingrad is not a turning point necessarily in strategic terms, because a lot more has to be done before the soviets can be certain of defeating germany,” says renowned world war ii historian richard overy. the germans had fought nearly a thousand miles across the soviet union to get to stalingrad.

hernan cortes;

explanation: