The economic backbone of Canada includesA．fishing.B．tourism.C．agriculture.D．entertainment

The Pennies is known as the backbone of England.（)

The Backbone of North America refers to theA．Appalachian Mountains.B．Rocky Mountains.C．Cas

______is the most important economic activity in Canada.A．ManufacturingB．AgricultureC．Mini

The backbone of Canadas economy is______.A．forestryB．agricultureC．service industryD．manufa

______is sometimes called the "backbone of England".A．The Sperrin MountainsB．The Cambrian

As the backbone of the North American continent, ______is known as the Continental Divide