Which war during the mid-1800s weakened the economy of the ottoman empire

The Russo-Turkish War.

Explanation:

It was a conflict between Eastern Orthodox Coalition composed by the Russian Empire, Bulgaria, Romania, Serbia and Montenegro against the Ottoman Empire. It was fought through the Caucasus and the Balkans.

It was a response of the Russian Empire to regain the territories lost in the Crimean War along with a new sense of nationalism in the Balkanic area. The coalition won the war and as a result of it the Ottoman Empire lost many territories, some in the hands of the Russian and other territories proclaimed their independence from them.

I hope his answer helps you.

c) they were beaten and fired from their jobs.