What was going on geologically that caused the earthquake that knocked down much of san francisco in 1906?

What first caused people to consider that the continents were once one large landmass?

Religious conflict in northern ireland started with a) cultural differences resulting from viking invasions around 800 b) england’s split from the catholic church in the 1500s c) rebellions in ireland between 1916 and 1921 d) the norman invasion of england in 1066

The chemical or mechanical process by which rock is gradually broken down eventually becoming soil