Time's Tapestry is a four-volume alternate history and science fiction series by British author Stephen Baxter. The series was published from 2006 to 2008. The four novels are Emperor, Conqueror, Navigator, and Weaver.
The narrative begins in 4 BCE and ends in 1943 (in a different timeline than our own).
In short, the science-fiction premise of this alternate-history epic is that our timeline today, i.e., history as we know it, is the result of a series of interventions from an alternate future into its past, the last of which occurs as the story ends, resulting in our own timeline.
Read more or edit on Wikipedia
alternate history novel