Which countries share a border? Italy & Russia
Ukraine & Spain
Poland & Germany
United Kingdom & France

What are objects called that have value in and of themselves as well as value as a means of exchange? custom commodity money currency simple money

Why are the majority of the world's economies mixed? what may happen to the "pure" types of economies (traditional, socialist/command, market capitalist) when they incorporate elements from other economic models?

Pedestrians,cyclists,skateboarders,and highway construction workers are know as?