Question

Why were the Balkans so important to Germany's war effort?

It offered a warm-water port.
It supplied much of the oil and gas.
Many German soldiers came from there.
They protected Germany from the Ottomans.

Answer 1

@JustSaiyan

Answer 2

I would say B because it states here:
`Germany obtained vital oil and food supplies from the Balkan countries`

~https://history.army.mil/books/wwii/balkan/20_260_1.htm