Scandinavian-Polish-Lithuanian Commonwealth

This is the main timeline of the Scandinavian-Polish-Lithuanian Commonwealth (also known as just the Commonwealth)
 * 1569, upon formation of the PLC Denmark proposes that if the PLC helps Denmark retake Norway and Sweden that they will join the Union. The PLC agrees under the condition they also fight Russia and take the Finnish and Baltic regions to connect the nation. Denmark agrees.
 * 1571, the Commonwealth-Russian/Swedish war begins with Swedish and Russian causalities enormous.
 * 1575, Treaty of Warsaw establishes the Commonwealth, with Sweden being annexed and Russia giving up Finland and the Baltic region.
 * 1576, The First Coalition develops against the new power and consists of France, the HRE in it's entirety and Hungary. The Commonwealth, Russia (who decided it's better to be an ally) and the Kingdom of England (still bitter about the hundred years war) form the Anti-Coalition. A Great War is set to begin across Europe as tensions begin to spark.
 * 1578, The Spanish and Portuguese join the Anti-Coalition.
 * 1580, Scotland joins the First Coalition along with the various Irish kingdoms.
 * 1581, Iberia unites to strengthen their position in the Anti-Coalition. The Treaty of Madrid finalizes this union.
 * 1582, Ottomans found the Middle Eastern Coalition with Persia (who was a traditional enemy) and the Sind nation.
 * 1585, The Great European War begins when HRE troops cross the border into the Commonwealth.
 * 1586, English troops invade the south of Scotland and Normandy. The Battle of Calais ends in English victory.
 * 1587, Commonwealth and Russian troops begin a counter offensive into the East and North of the HRE. The counter offensive succeeds.
 * 1588, The War ends with the surrender of the First Coalition.