What helped to make the First World War such a long and deadly war? large land areas that troops had to travel over

spy satellites and wireless communication

inventions like the airplane and the machine gun

alliances between Spain, the United States, and Canada

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

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