>>508061860 (OP)10 years
Great depression much worse than 1929
Destruction of middle class because of automation which a big part joined drug gangs. Others exiled to south america, central europe, east asia.
The West suffer more than expected after the destruction in the middle east
20 years
Mass deaths due to climate where London will know a summer with days over 50*C. A big enough object will strike earth killing billions in the east. East China, Taiwan, Korea, Japan all submerged.
Lost of technological knowledge leading to regression because losing means of production and knowledgeable people
Whites become minority in the US
An islamic party has majority in a country of Western Europe and elects a president from that party, then elections will be abolished
30 years
Europe is majorly brown and poorer, contaminating Central Europe
War erupts in south America
Neo-Siberia becomes a haven for white people and witnesses hypergrowth
Companies try to move chemical semi to africa and fail.
Attempt to colonize Mars fail (all pioneers died)
40 years
New laws to ban sexbots in the US but that's irrelevant
The whole world devolves into shanty towns. Losing the mean to produce electricity. New synthetic Drugs use are omnipresent.
The rich and smart people, or even city workers to maintain infrastructure are hunted and killed.
Designer babies grown in vats to create beautiful, intelligent and obedient people
50 years
Rebuilding part of the world and repopulating with vat factories.