There are also significant areas of the earth that are least prone to
earthquakes. These are central Canada, Eastern Russia, large parts of
Australia and Africa - this continent is the least seismically active.
The EQ can strike everywhere, and no area on earth is immune to it. In Canada, small EQ can be related to post-glacial, isostatic rebound, which can be observed all over the world that were under glaciation. However, the earth crust under cratons like in Canada is stable, and EQ not frequent. Nonetheless, they still occur, but not on scale and frequency as they happened along the rift. Also it is necessary to mention that geology does not know all the fault and fractures, and in places like Australia and Canada there are not old records that can pinpoint into possible rifts.
There is also not agreement on all the possible continental plates and microplates. When I studied a plate tectonics, some articles pointed that African plate is splitting in two (Nubian plate and Somali plate), but other research indicates that it splits in three (within Zambia). Even within USA there is no agreement what causes Madrid quake outside Memphis, TN, which was the strongest EQ in lower 48 states in history of USA and stronger than any EQ in California in last 200 years. East Russia is also thought to be a plate of its own, where lake Baikal is a rift, but the movement of the plates against each other is stable (about less than 1mm per year). It does not mean that EQ would not happen there as well. Central Europe, due pressure of Alps and Carpathians against stable Bohemian massif, can generate strong EQ as high as 8 magnitude, which happened last time in 1786. It is totally forgotten and similar quake will be deadly.