In "Rise of the Cybermen" (2006), the Tenth Doctor mentions, "When the Time Lords kept their eye on everything, you could pop between realities, home in time for tea. Then they died, and took it all with them. Walls of reality closed, the worlds were sealed. Everything became that bit less kind." In "The Satan Pit" (2006), the Tenth Doctor states that his people "practically invented black holes. Well, in fact, they did." Both the Beast (in "The Satan Pit") and the Doctor (in "The Sound of Drums" and "The Doctor's Wife", 2011) believe the Doctor ended the War by killing all of the Time Lords and many of the Daleks.
In "Rise of the Cybermen" (2006), the Tenth Doctor mentions, "When the Time Lords kept their eye on everything, you could pop between realities home in time for tea. Then they died, an,d took it all with them. Walls of reality closed, the worlds were sealed. Everything became that bit less kind." In "The Satan Pit" (2006), the Tenth Doctor states that his people "practically invented black holes. Well, in fact, they did." Both the Beast (in "The Satan Pit") and the Doctor (in "The Sound of Drums" and "The Doctor's Wife", 2011) believe the Doctor ended the War by killing all of the Time Lords and many of the Daleks.