I want to know the answer to the following question:
What was took place in 1854-1856?
All the background I'm provided with is that "The ensuing Crimean War (1854–56), which involved new techniques of modern warfare, and was the only global war fought between Britain and another imperial power during the Pax Britannica, was a resounding defeat for Russia.". Is that enough to answer the question?
Answer: yes