Who was kicked out of the Louisiana purchase when it was happening?

What problems could arise if the united states initiated the marshall plan in european countries without said countries’ cooperation

What stalled germany's initial invasion into france in 1914

Jackson pollock described his art style in the following quote: “new needs need new techniques.… it seems to me that the modern painter cannot express this age, the airplane, the atom bomb, the radio, in the old forms of the renaissance or of any other past culture. each age finds its own technique.” what point is pollock making about the new styles of art?