B. Over time, species became better adapted to their environment.
They were all killed leaving no survivors
Answer:
The British Empire
Explanation:
The British Empire was the great power that had the biggest empire in the 19th century.
The Indian reservation system established tracts of land called reservations for Native Americans to live on as white settlers took over their land.
They used interchangeable parts. This made the mass production possible and caused it to happen.
