first something like an expanded french revolution or/and Napoleonic or unification wars unites most of Europe and expands it, disolving most european empires, integrating the Ottoman empire, and defeating and anexing Russia
after decades of guilotining and gulags it becomes officially a union of democratic states
this Union is at first radically progressive possibly atheist or ideologically oposed to existing religions so the Pope goes exile in south America as well as most church oligarchy and numerous other refugees, such as ex-feudals, political oposition, persecuted christians, "enemies of the people" etc...
simultaniously the with the Spainsh and Portugese empires being defeated in Europe, south America becomes a safe haven for all the former european nobility fleeing the new order, and with no more colonial rule, all colonies become indipendant sates
there is still generall chaos and religion and armed force are the few things that can effectivelly rule large populations, most of wich speaks the same language and is of the same faith
south America so becomes the fortress of the true chatolic faith, the territorial and demografic base of chatolicism, probbably with Brazil as the centre of a federation of states, wich then conquer Greater Peru, and anex any other state that is still not under the direct control of holy rule
the church oligarchy and exiled nobles and aristocrats elect an emperor-pontif, the divinely apointed ruler of all the Americas
with the Russian empire colapsing China takes the chance and captures large parts of ex-russian territory as well as Japan wich does not modernise as in OTL
after the British empire or some other colonial power conquers and unites all of India and Kashmir, it begins to lose power after what happens in Europe and so a indipendance movement begins in India but the empire does not let go of its last stand on earth and theres a blody indipendance war, wich brings a militant nationalistic party, based on the caste sistem, on power, wich then expands into ex-Russian and/or Chinese territory, adopts most of the left behind colonial sistem and builds a superpower on kuli labour and milion man armies
ider that or the colonial power ruling India, after losing its stand in Europe, ewacuates its power base to India, wich eventually becomes its new homeland, with the governing class asimilating into the ruling caste
Indonesia and Oceania see a rise of Islamism during colonial rule, wich becomes and indipendance movement, wich then brings a theocratic gowerment in power in all of the region, ewentually invading Australia
Severall muslim states free themselves of colonial rule and proclaim a califate that rules ower most centrall and south africa
there could be an influx of muslim religious and political figures from the midle east and north africa that are now considered politically incorect
also some white population might convert to stay in power but mostly the conversion is to stay alive
there is some war with remaining post-colonial states but those are run ower in a series of jihads that serve also to spread islam to that part of the population that is christian or animist
why they would chose to call themselves Draka i really dont know
these two califates then develop intense friendly relations helping each other economically and millitarily, esppecially during their formation if one already exists before the other is formed
all this causes a series of economic depresions to hit the United States
EU might be oposing america for politic or economic reasons, or USA might go on a series of losing wars that destabilise it
fundamentalist, Papal state, could also cause a decline of the United States, even if indirectly
eventually theres a revolution in Mexico, wich spreads to parts of north America and causes a revolution that eventually brings a comunist goverment in Washington, or some alternative capitall. New York maybe
Kanada is invaded or taken ower in some similar way, and a federation of United Socialist States of America is formed
parts of siberia are still a disputed area as three powers treathen to fight ower it and are trying to avoid a larger war, so they fund and support local ethnic conflicts
New Zeland is the last remaining stand of the British Empire, currently colapsing into a few small despotic states