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.
Idk if your asking what the oldest political party is but I'm assuming you are so,
Federalist is the oldest party in the US. They eventually become the democrats.
C - North to South
The Mekong, Irrawaddy, and Chao Phraya rivers all flow from North to South, thus answering your question.
Hope this helps!
In terms of land area : Brazil