This is the website for the Cherokee nation of the Cherokee tribe. It is a federally recognised government of the Cherokee people. Their mission is "The Cherokee Nation is committed to protecting our inherent sovereignty, preserving and promoting Cherokee culture, language and values, and improving the quality of life for the next seven generations of Cherokee citizens.". There are over 317,000 Cherokee people and "several groups claiming Cherokee lineage that are not federally recognised make up some of that 819,000-plus people claiming Cherokee blood." - http://en.wikipedia.org/wiki/Cherokee this makes the Cherokee the largest tribal nation in the US. They are mostly based in Oklahoma.
The image/logo used is the seal of the Cherokee nation with the date September 6, 1839, suggesting the original government was formed around that time however the US federal government dissolved it during 1898-1906 with the Curtis Act of 1898, after this the structure of the tribal government was not clearly defined until 1938. And in 1975 a constitution was written up. "In 1975 the tribe drafted a constitution, under the name Cherokee Nation of Oklahoma, which was ratified on June 26, 1976. The tribe has also conducted litigation using this name."
In more recent times the Cherokee nation have experienced high economic growth. They have significant business, real estate, and casinos. They have contributed hugely to the community with development programmes, health clinics, learning facilities and universities, the practice of Gadugi and self reliance, created language programmes for children and the youth and are also a powerful political force in East Oklahoma.
The websites features the history of their tribe and displays events such as 'Remember the Removal' which is the Trail of tears bike ride programme. It also offers financial and other types of help for their citizens including healthcare programmes.
This shows the Cherokee nation are trying hard to keep their culture alive, spreading on the language and history to future generations which appears to be working successfully. The offering of healthcare and financial help can also be an encouragement to stick together as a tribe.
In my opinion the Cherokee are the most successful tribe with the most people and the most culture saving programmes. The use of events and bringing people together and teaching the future generations is a positive and effective way of keeping their culture alive.