A great ahistorical mod, would be having the ACW turn into a world war.
Britain and France historically both considered joining in on the side of the confederacy, but decided against it.
Lets say they decided to intervene because of the shortage of cotton caused by the war. Russia is still realling from its defeat in the crimea and feels its losing the great game, between it and britain. Russia see's this as an oppertunity to get back at briatin by siding with the union. Afghanistan should then get an event asking it to side with either russia or Britain to help one invade the other. This is because afghanistan was always getting involved in the great game. France only real interest in enterent the acw was tyo have a base and ally to help in its conquets of mexico (which in a sense would happen without intervention anyway). Mexio gets a large shipment of guns and volenteers form the usa and russia and joins there allience.
This makes the war:
Britain, France, CSA V Russia, USA, Mexico
Afghanistan will join one or the other
Other potential nations to get involved later in the war could be: Ottoman Empire, to settle its rivalry with Russia. China, to take revenge on Britain for the opiom wars. Brazil, maybe a little too far fetched, but maybe it could join with the CSA because it reconises the need to not be the only western nation to not have abolished slavery.
If all those nations included it would be:
Britain, France, CSA, Brazil, Ottoman Empire V Russia, USA, China, Mexico
afghanistan will; join one or the other
Britain and France historically both considered joining in on the side of the confederacy, but decided against it.
Lets say they decided to intervene because of the shortage of cotton caused by the war. Russia is still realling from its defeat in the crimea and feels its losing the great game, between it and britain. Russia see's this as an oppertunity to get back at briatin by siding with the union. Afghanistan should then get an event asking it to side with either russia or Britain to help one invade the other. This is because afghanistan was always getting involved in the great game. France only real interest in enterent the acw was tyo have a base and ally to help in its conquets of mexico (which in a sense would happen without intervention anyway). Mexio gets a large shipment of guns and volenteers form the usa and russia and joins there allience.
This makes the war:
Britain, France, CSA V Russia, USA, Mexico
Afghanistan will join one or the other
Other potential nations to get involved later in the war could be: Ottoman Empire, to settle its rivalry with Russia. China, to take revenge on Britain for the opiom wars. Brazil, maybe a little too far fetched, but maybe it could join with the CSA because it reconises the need to not be the only western nation to not have abolished slavery.
If all those nations included it would be:
Britain, France, CSA, Brazil, Ottoman Empire V Russia, USA, China, Mexico
afghanistan will; join one or the other