The american civil war beacause you cant just search only that up. You will get lots of answers beacuse more than one thing happened then.
Britain became a naval power after beating the Spanish Armada.
Im pretty sure one of the main reasons is because of the treaty system
Answer:
The most important reason that the Confederate States needed to be recognized was to better its trade with Europe. It was different if the Europeans were trading with a set nation rather than a large chunk of land that wanted nothing to do with the Union, a big part of the trade at the time.