40th century

By the dawn of the 40th century, the Dalek Empire was just as much of a threat as it had ever been. On Skaro, the Dalek Supreme Council had dwindled to a single Dalek. With Dalek gains in the Outer Galaxies consolidated, that Dalek assumed the title of Dalek Supreme. Having observed the failed stratagems of its rivals and learned from their mistakes, the Dalek Supreme set in motion the Daleks' master plan, which would take the better part of a century to enact. (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe) By the end of the 40th century, the Space Security Service existed, with a mission to control alien threats in the solar system, and its headquarters in Central City on Earth. (TV: The Daleks' Master Plan)
Gravity force as a source of energy had been abandoned for centuries by the human race. (TV: The Daleks' Master Plan) Oil was still used though, and since the Earth had been drained of it, corporations like Oil Corp went looking for it on other planets. (TV: The Infinite Quest)
Space piracy was common at this period. (PROSE: The Pirate Loop)
In this century, Foamasi of the Dark Peaks Lodge used the voices of Chelonian politicians of this century for their voice synthesisers. (PROSE: Placebo Effect)
The beginning of the century saw the New Dalek Paradigm begin a war against humanity, overlapping their past inactivity and subsequent attempted invasion of the solar system. (TV: Mission to the Unknown) The war was fought throughout the century and continued into the next. (COMIC: The Only Good Dalek)
By the latter part of the century, the Third Imperial Consortium was a major power in Mutter's Spiral. It was ruled by an emperor. (AUDIO: Last of the Colophon)
Baltazar destroyed Earth's Defence Forces, but his warship was destroyed before he could assault the planet. (TV: The Infinite Quest)
The Mantasphids invaded Myarr, leading to a war between them and the humans. (TV: The Infinite Quest)
The Brilliant was trapped in a time loop and was lost. (PROSE: The Pirate Loop)
The Twelfth Doctor visited the Twist at some point during the 40th century, and helped the Foxkin reveal themselves to the humans who lived there. (COMIC: The Twist)