Indigenous population

Here is some resource about contacting the indigenous population.
1. Religion spread out to the indigenous people
 Santeria
A indigenous religion combines Spanish Catholicism and their own mystical beliefs
http://dtsdapache.hershey.k12.pa.us/wpmu/hs_aphg/category/indigenous-religion/
2. Exploration
 Vikings
http://www.archeurope.com/index.php?page=viking-contact-in-e-arctic
3. Trade
http://www.culturalsurvival.org/publications/cultural-survival-quarterly/guatemala/fair-trade-indigenous-peoples
4. Native Planet
A non-profit NGO helping indigenous people preserve threatened cultures
http://www.nativeplanet.org/