George Friedman's The Next 100 Years is worth reading in terms of projected trends both in the US and internationally over the 21st century. He was incredibly prescient about the "Second Cold War" given that he wrote in 2009.
https://en.wikipedia.org/wiki/The_Next_100_Years#Demographic_Change
For technological trends, nothing is better than the "Future Timeline" website, which is a year-by-year future projection of technological, political, and planetary changes.
http://www.futuretimeline.net/
You can find individual links for every year from 2017 to 2049 with capsule summ