The answer to this question is 10,000 indians.
They gathered in that place because of the Treaty of Fort Laramie.
The treaty of Fort Laramie divide the lands that exist on top of united states into several parts, and determine which part of region that couldn't be claimed in any way by the Government
<span>The first colony in Virginia was in Jamestown. </span>
They're known as Indo- Europeans.
Indo-Europeans is a general name for the people speaking an Indo-European language. They are (linguistic) descendants of the people of the Yamnaya culture in Ukraine and southern Russia, and settled in the area from Western Europe to India.
They raised cattle and horses. They were the first ones to domesticate horses, which increased their ability to travel and migrate
The archipelagos of Southeast Asia contain many islands (B). An archipelago is a group of islands, which means archipelagos contain many islands. Hope this helps!