The correct option is A. Crimean War during the mid-1800s weakened the economy of the Ottoman Empire. The Ottoman Empire's military frailty was exposed in the Crimean. They couldn't have won the war without assistance from other countries.
What was the effect of the Crimean War?
For the Russian Empire, the Crimean War was a turning point. The conflict diminished Russia's power in Europe, depleted the nation's economy, and crippled the Imperial Russian Army. For decades, the empire would need to rebuild.
Imperialism by the British, French, and Italian countries, nationalism in Greece and the Balkans, Russian and Austrian aggressiveness, Ottoman tolerance, and the Ottomans' incapacity to modernize all contributed to the Ottoman Empire's decline in the late 18th and early 19th centuries.
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