In what sense would the world never be the same
after World War I? Were the changes largely negative,
positive or a mixture of positive and negative
according to the article?

it would be a mixture of them both

Explanation:

after world war 1 everything was at a all time high the stocks, car building etc. but over in Germany things were a lot harder that's were i think America messed up then few years later world war 2.

newly independent countries of the former ussr

answer:   the name of this act is known as the:

    " american recovery and reinvestment act of 2009 " .