What was a primary goal of President ThomasJefferson’s 1803 decision to purchase the LouisianaTerritory

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?

What river systems the worlds earliest known civilization develop ?

Aform of government in which the people rule,either directly or through elected representatives