A major problem for the United States after the Revolutionary War (1775-1783) was that tens of thousands of Loyalists, due to the climate of violence and fear that still existed after the conflict (particularly in the South), fled the country, retreating with the British army to Britain and other parts of the British Empire (Jamaica, Bahamas, India) and also to Canada, settling primarily in the regions of Nova Scotia and New Brunswick. Since those Loyalists were often wealthy and educated, and they had been part of the thriving and cohesive upper class that controlled much of the industry and the commerce in areas such as New York or Boston, the social structure of the colonies changed significantly after their departure.
Thanksgiving, the national holiday in the United States which is celebrated on the fourth Thursday of November, was originally celebrated in October 1621 by the Pilgrims, along with the native Americans, after their first harvest in the New World. Pilgrims held a Thanksgiving celebration again in 1623 because, after the original feast to which attended 90 Native Americans and 53 Pilgrims, the latter began to gather in the small harvest they had.
In the 1700s, specifically from 1774 to 1789 The Continental-Confederation Congress appointed one or more thanksgiving days each year, or in other words several national days of prayer and thanksgiving. This practice was continued until October 3, 1789, when President George Washington proclaimed and created the first Thanksgiving Day designated by the national government of the United States of America:
Finally, On October 6, 1941, the congress passed a resolution fixing the fourth Thursday of November as the date for the holiday, beginning the next year in 1942
They can co-sponsor a bill in the house of representatives. So it is TRUE
It's because they was dividing Indian society groups based on rank, wealth, or occupation.
Answer: Because they had never developed immunities to the disease