I have always found the subject of alternative histories fascinating. If' questions, and gives us six alternative history worlds in which to go adventuring. Or you can use any one as the basis for a campaign set entirely in one of them, though this would involve a lot more work fleshing things out. Then we have a description of the world as it is 'today', with a few paragraphs about the major nations. Then we get a section on campaigning in the world, and some sample character archetypes suitable for local-born player characters.
Sidebars detail significant miscellaneous information, and interesting tidbits.
This is a dark world, dominated by the exploitative empires of the great European powers, of which Britain and Russia have been the most powerful. The revolutionary Russian Dominate is a harsh totalitarian tyranny. Across the ocean British America is still an impoverished, oppressed and rebellious colony, much poorer than Spanish America, which includes Texas and California as well as Mexico. At the moment, it's a 'cold war', the Russian Dominate trying to undermine the quintuple alliance of European thrones by formenting revolt in the colonies. Overall, this is probably my least favourite of the six worlds.