Answer:
The event is known as the Trail of Tears
Explanation:
In 1830, congress passed the Indian Removal Act. This law allowed then-president Andrew Jackson to remove the native indian populations of the Southeastern United States, to a new territory in Oklahoma, known as the Indian Territory.
Over 30thousand people belonging to the tribes mentioned in the question were obliged to abandon their homelands, and move westward. During this event, a lot of them died of diseases and starvation. This sad reality is the reason why it has come to be known as the Trail of Tears.
According to what I remember, it would be B. El Nino.
Forgive me if this is wrong.
Above the ground pipelines save permafrost from destruction, but they can : D. cause habitat loss for arctic animals
This happen because above the ground pipelines destroy the environment and making it unsuitable to support the animal's living
hope this helps
The answer is Contour lines