What are three ways that civilization in western europe declined after the roman empire fell?

Why did french and austrian troops stops revolts in spain and italy

The map shows italy in the early 19th century

Complement what happens to the demand for butter, if the price of margarine increases? 2. substitute 3 butter and margarine 3. demand increases ice cream and ice cream cones 4. demand decreases what happens to the demand for ice cream cones, if the price of ice cream increases?