Where is the geographical center of the united states

Where is the world’s shortest commercial runway?

An enormous wave generated by an earthquake beneath the seafloor is known as a

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