A lot of the previously mentioned effects seem minor in case, a changed word here, a changed date there. From 2017 onward, we started seeing more and more changes in history.
There are small changes, like Hitler’s eye color being blue now rather than brown and his moustache being bushy instead of tidy, but also more important changes, like the terrorist attack on the US in WW1, WTC 6 now also having imploded on 9/11, JFK having been shot by Jackie, new archeological finds in Petra, and the earlier date on the ban of cigarette ads.
The extent to which changes are being made to historic events is still in flux, but according to the Angel we can expect many more changes to historic events over the coming years, to the point where much of modern history won’t be recognizable.