The answer is bone spears.
Answer:
Manifest Destiny
Explanation:
Assuming you're referring to the 1872 painting 'American Progress', where a woman in white is crossing the plains alongside pioneers and Natives, the woman represents Manifest Destiny.
This is the idea that God deemed the American nation to be worthy of conquering the continent and spreading their civilized, superior culture, ideals, government, and society from the Atlantic to the Pacific.
C-Most machines had few safety features.
