I think oxygen and carbon dioxide i'm not sure though
The indecisive outcome of the Cenepa War — both sides claimed victory — along with the mediation efforts of Argentina, Brazil, and chile.
A presidential veto happens when the president withholds his mark from a bill introduced to him, after it has been passed by both places of Congress, and returns it to Congress (particularly, to the place of starting point), alongside his protests to the bill.
I think government systems have their weakness and strengths. Having a just society needs good governance that promotes the welfare of people that also has a strong implementation of the rule of law. Enforcement of the law to create a peaceful community is important.