This is something I created based on what is going on now. I also stated the reason is an economic disaster causes widespread unemployment, and the Union collapses into many small, disorganized states. California, Texas, New York, who have a significant population and the ability to fight a war of attrition, alongside Illinois, because of Chicago and Springfield, Colorado, due to Denver, Florida, Miami and Tallahasse, Washington state, due to Seattle, and Virginia become the "great powers" of this country, and begin unifying it. Also, this is just for fun, so I know there probably are alot of errors.
This begins in 2014
The union collapses and states marshal volunteer armies, while regulars join with their respective states. California, Texas and New York immediatley begin taking over states, with little resistance, followed by Colorado, Illinois, Florida and Virginia. Unfortunatley, Colorado and Texas troops clash in New Mexico and the two begin a war.
In the north west, California attacks Washington occupied northern Oregon, while Virgina is attacked by Florida. New York declares war on Illinois, and many, no related wars occur.
2014 and 2015 see a series of bloody wars that lost for two years before the great war begins. By 2016, Colorado's and Washington's war efforts are near collapse and Washington surrenders to California. Colorado, hoping to save itself after Denver falls, asks California for a union.
This results in the two uniting and pushing the Texans back, while in the Mid-west, Illinois is defeated by New York when Chicago falls and lake michigan is taken. The Californians capture the Pacific fleet and use it to attack Texas, via the Panama canal, and it is renamed the Californian Navy.
New York attacks Virginia, who has conquered the upper south, and a string of fierce battles erupt, leaving Virginia, Ohio, and Maryland devastated. The Californian Navy attacks southern Texas ports and a blockade begins.
New York strikes a deal with California and Colorado and the three unite under the United American Republic, and Florida forms a de-facto alliance with the Republic and keeps Virginia's troops occupied.
By this time the union of California, Colorado, New York, fight against the alliance between Virginia and Texas, and by 2017, Virginia is overrun, however Texas responds by drafting over a million men to clash with the Republic's 1.5 million man army.
Allied forces take most of northern Texas, before a Texan counter offensive ends it. From 2018-2020, over 700,000 American men are killed and draft laws are introduced in the Republic, leading the alliance to nearly break up.
By 2019, nearly 3,000,000 men now serve in the two armies, and slaughter is common. Both sides fight as the war rages on. Texas, Nebraska, Oklahoma, and Colorado are torn by war and the great armies that clash against eachother often fight in bloody stalemate.
In Europe, Britain and France decide the war has gone on long enough, and send troops to break the deadlock on the side of the Republic. The Texas respond by commandeering firing a nuclear missile at London, which shatters the peace. The world decides that Texas has to be defeated and England responds with a nuclear assault, leaving the country in ruins.
This is december 2020, christmas is not celebrated in war torn North America, which has mired in blood shed for more then 6 years, and the Texans, losing resolve, revolt against their state government, and a 2nd civil war breaks out in texas.
Texan loyalists, who support the government, against the pacifists, who want peace, fight. 10 million troops from Britain, France, Poland, Russia, and China land in Texas and secure the country.
By march, 2021, the war ends, just 3 weeks after the 7th anniversary of the war. 6 Million American military men are dead and 30 million civilian casualties are found, with 36 total deaths, the bloodiest war since World War II. Alternatively called World War III, because all the great powers have been involved. 26 million men have been mobilized, of which 10 million have been killed and 18 million have been injured.
The slaughter of The Second American Civil War, or World War III, has left the new United Republic of America broken, scarred, and depressed. America falls from its place as a superpower, and begins a long and unsure path to recovery, never again will there be the United States of America, in its place, a financially strangled, with an army of just 200,000 kept in place. The world sends food, resources, and supplies to the crippled America, and China gets rich off American need for resources, a new age has begun, the end of an era.