The dust bowl of the 1930s was caused by what?

What are the differences between differing map projections ?

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

How did geography influence the settlement of early africa.