After the united states purchased the louisiana territory, america’s western boundary shifted to the which is a(n) boundary.
a.

mississippi river . . visible
b.

mississippi river . . political
c.

rocky mountains . . physical
d.

rocky mountains . . imaginary

How can i cope with anxiety/stress ? i need the best ways.

Annette suffers from recurrent episodes of gorging on large quantities of food followed bypurging through self-induced vomiting in order to prevent gaining weight. although her weight is well below normal to the point that others see her as "skin and bones," she worries excessively about being fat. she also has impulse control problems in other areas of her life.she is suffering from ) binge-eating/purging anorexia2) restrictive anorexia3) bulimia nervosa 4) binge-eating disorder

Feathers wings and the hollow bones of birds are examples of