Answer:
I believe it is the last one because I learned about this in seventh grade and the mayans were actually one of the first civilizations to create a 360-day year. forgive me if im wrong
There were several immediate stated causes for the U.S. declaration of war: first, a series of trade restrictions, Orders in Council (1807), introduced by Britain to impede American trade with France, a country with which Britain was at war (the U.S. contested these restrictions as illegal under international law); second, the impressment (forced recruitment) of U.S. citizens into the Royal Navy; third, the British military support for American Indians who were offering armed resistance to the expansion of the American frontier to the Northwest. President James Madison and Congress declared what is sometimes referred to as the 2nd War of Independence, the War of 1812.
Because you could just sit in your trench and wait for the opponent to attack, at which point you could shoot him, throw explosive devices, or even use chemical weapons that weren't banned then.
