Why are many plants and animals in australia unique to the region?

Which article of the us constitution addresses the issue of interpeting the laws of the united states

Which of these is the best example of a cause-and-effect chain of events? 1. alonzo went to the music festival. 2. carmen went to the same music festival. 3. alonzo met carmen at the music festival. 1. yosef bought a new car from a dealership. 2. bailey bought a car from the same dealership. 3. bailey paid more for his car than yosef did. 1. the high school football team played a game on friday night. 2. the drama club put on a play on friday night. 3. maya watched the football game instead of the play. 1. a fast food restaurant ran an advertisement on television. 2. hank saw the advertisement and got hungry. 3. hank went to the fast food restaurant and bought food.

Of the 8 territories that were brought under the flag of the united states by 1853, which on do you think was the most important addition to the growth of the united states? give 2 reasons.