When states encounter problems that cross state borders, why don't they just make formal agreements with each other to solve the problems? What happens in the absence of such arrangements?

What is politicization?As a new president, under what circumstances would you try to politicize and how would you do so? Use examples where relevant to support your statements

What will be an ideal response?

Modern nationalism combined with industrialization led to

a. the emergence of the modern state system. b. the French Revolution. c. total war. d. limited warfare.