Which physical features has helped Europe's economy the most? why?

What was the great rift valley formed by

Which part of a mountain receives the majority of moisture due to the rain shadow effect? a. the leeward side b. the windward side c. the bottom of the mountain d. all parts of the mountain receive equal amounts of moisture.

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