Ineed on thinking of a sentence for manifest destiny

I can suggest some sentences: 
1) you can describe what it was: 

Manifest Destiny was the belief that settling in America was a destiny, or right, of the settlers. 

2) you can describe its effect: 

Manifest Destiny was a belief that justified many injustices towards the indigenous people because it suggested that the settlers had a right for the land, which in turn undermined the indigenous claim to the land. 

He was probably very upset and disapointed and mad. all at once. so he probably wanted to show his disapointment, angryness, and depression. he didn't think of the affects due to the minor issue thst he has gone through. sorry if it doesn't . but i am trynna people.