Why was nationalism an important factor in ww1?

People are prideful of their nation. Nationalism is a way of explaining or putting in words how much some people really love their country. Some people love their country so much... they made a war. it honestly like that...everyone spent Billions of dollars. just to prove they were better and lost.

The majority of carbon dioxide is transported as part of the bicarbonate system. Carbon dioxide diffuses into red blood cells. ... Bicarbonate leaves the red blood cells and enters the blood plasma. In the lungs, bicarbonate is transported back into the red blood cells in exchange for chloride.