The plural of economy is economies.

As in "the economies are failing".

Germany***

there is a really corrupt government, the economy is failing, terrorist control domestic areas.

The economy was failing, and Hitler gave them someone to blame it on...the Jews. Hitler was also very influential and persuasive. The economy was failing, and Hitler gave them someone to blame it on...the Jews. Hitler was also very influential and persuasive.

they only rely on mining minerals; they don't have much of a variety. If these resources diminished, they would quite possibly have a failing economy.