[@FallenTrinity][@Gisk]

Okay so once again some really great input, here is what I have so far on the war.

The northern frontier were not particularly warlike, but because of their need for food and basic living resources they had to trade with the two staes of the western coalition. Now because of their military might, their trade deals were quite agressive and could be considered unfair. Demanding ridiculously cheap prices for what they wanted and offering elementus at an insanely high price. Now the proud Hylo Empire saw this as economical warfare as the northen frontier was essentially dictating the market. The Hylo Empire was also the first reigon to utilise the solar panel farms as their main source of energy which was actually far cheaper and easier than trading elementus or buiding nuclear power plants. So they began to push back against the unreasonable prices with the frontier which created some tension but they eventually gained some leverage on the market.

The Therux state were somewhat more paranoid of the froniter stockpiling large mecha armies, and after seeing the pushback of the Hylor Empire, they called for an end to their rivalrly and proposed a coalition to stand up to the northern frontier if they ever tried to attack. Unfortunately this coalition and build up of a huge joint army made the northern frontier very nervous and while trade continued both reigons were ready for war. The military conflict was sparked over a small skirmish between Frontier and Hylo Mechas in the fortune reigon over the builiding of a tower. The Hylo forces claim it was a defense garrison that the frontier were trying to expand military structures in the land, but the frontier claimed it was simply a generator building to refuel scout mechas in the largely undiscovered territories. No one can confirm truly what the building was but due its ability to start the world's biggest war, it has been called [b]Tower of Helen[/b]. 

The Hylo forces destoryed the Helen tower and the frontier forces fought back in a small skirmish with zero casualties, but the act of agression was enough to send the fully paranoid northern frontier into full scale war with the Hylo Empire which now was backed by the Therux state. The war was largely the frontier sending invading forces to the western lands and being beaten back. While the strategic nightmare of attacking the northern reigon made any offense for the Western Coalition nigh but impossible. No territory was lost, only soliders, civilisations and mechas. But the war went on for so long that it turned the world into what it is today, an economically damaged dystopia, with crippled armies on each side constanty in fear of another war.