The US government wanted the land of the Native Americans, and they were not willing to just give it up.
False
They had been used before that. they were simply intergrated to the computer programming system after along period. the power symbol was developed in ww2.
It refers to the artists of the turn of the century, that is the art made at the beginning of the 20th century. It mostly refers to modernists and symbolism who created in this period and whose art was full of things like pessimism and cynicism. Modernity in general is associated with it.