What is Great Northern War?
The '''Great Northern War''' (1700–1721), was a war fought between [[Sweden]] and the coalition of [[Russia]], [[Saxony]], [[Poland]], and [[Denmark-Norway]]. In 1715 [[Prussia]] and Hannover joined the war against Sweden. The King of Hannover was also King [[George II of Great Britain]]. After the coalition attacked them, Sweden invaded Russia in 1709 which was not a good idea. The Russian Army retreated so the Swedish Army had to chase them. When winter came it was the coldest winter that Europe had had in a hundred years and half of the Swedish [[Soldier|<u><span style=color:#06c>soldiers</span></u>]] died in the cold. Eventually the Swedish army caught up to the Russian army and they had a battle, called the battle of Poltava. Russia won the battle but most of the Swedish soldiers, including king [[Charles XII of Sweden]], escaped and went to the [[Ottoman Empire]]. Peter, the king of Russia, didn't like this so he declared war on the Ottoman Empire. He lost and had to give the town of [[Azov|<u><span style=color:#06c>Azov</span></u>]] back to the Ottomans. Charles XII left the Ottoman Empire in 1714 and went to [[Stralsund]] in [[Pomerania]] which was owned by Sweden at the time but was under [[siege]]. Charles escaped back to Sweden just before the people in Stralsund [[surrender]]ed. Then he invaded Norway (which was owned by Denmark at the time.) and was shot and killed there. With their king gone, the Swedish soldiers left Norway and went back to Sweden. On the way back many soldiers died. When all that was happening Russia had been invading Sweden. Russia conquered Estonia, Livonia and Ingria. By the time the remaining soldiers had come back from Norway, Russia had completely conquered Finland. Sweden still didn't want peace though, because they would have to give lots of land to Russia. Russia used a newly made fleet of ships to attack and raid the Swedish Coast and Sweden would still not give up. Eventually the Russian and Swedish ships came together in the Battle of Grengam. Both sides though