The main causes for the war was Spanish encroachment on Hanseatic colonies in Vinlandia and Cortes, as well as a Hanseatic desire to link the colonies of Bremerland and Königinland. As the mage-enhanced Hanseatic armies in the New World quickly converted or pacified the native inhabitants in their colonies, Spain - who had banned the use of all magic by their people struggled against the natives in their own territory, only moving forward due to their huge technological advantage. When the Hanseatics pacified an area and moved on, several Spanish units decided to take advantage and establish forts inside Hansa territory. Tensions grew and border skirmishes became more frequent. When the 2nd Spanish Civil war broke out in 1703 the Council of Burghers began plans to end the Spanish threat to their colonies.
On March 3rd 1704 as the Spanish in Europe were held up fighting the Portuguese and themselves, the Hanseatic Navy moved in to secure the Strait of Panama to ensure forces could get through to reinforce Königinland and Neuhansa, and after a pitched naval battle, the navy secured the strait. The first armies from Germany landed in the colony of Königinland on the west coast of Cortes. The Bremerlandian colonial army began an attack from the east to distract the forces in Spanish New Andalusia while the Hansa forces in Königinland moved up from the south. Soon after another convoy brought Hansa troops and supplies north to Neuhansa. Before another convoy could be allowed through however, the royal Spanish navy arrived and pushed the Hansa forces out of the strait.
Inca-Hansa alliance and inciting dissent
Following the retreat of the Hanseatic Navy from the Strait of Panama, the individual colonial commanders began looking at new strategies. While the Hanseatic Navy could keep Bremerland supplied, the Spanish navy holding the strait of Panama meant any supplies for Neuhansa or Königinland had to go around the southern cape of Cortes, which could take months longer. One strategy was an alliance with the Inca Empire, which had been at war with Spain since 1532. In August of 1704 a delegation from Königinland reached Cusco to meet with the Inca emperor about a treaty. In exchange for an alliance against Spain, Hanseatic representatives would aid the Inca in industrial and military reform, and the Hanseatic Republic would gain exclusive trade rights for 100 years. The newly formed alliance then began to push north from the Empire's boundaries, wiping out Spanish gains that had taken decades to achieve. This push from the south allowed the Hansa forces in Bremerland and Königinland to renew their assault on New Andalusia.
Meanwhile, Neuhansan forces maintain their gains but are unable to push the Spanish Mexican forces further back, so instead they begin sending spies, inciting unrest, locating the leaders of independence or revolutionary movements and promising support. Over the next two years most military action on the Neuhansa front were small-scale skirmishes and small raiding parties to disguise the insertion of covert agents.
Mexican Independence and end of the war
In early 1706, the Hanseatic campaign in New Spain to gather support for their invasion has gained ground, with the largest group being an independence movement, centered on a charismatic aristocrat named Miguel Santiago.