Yes, it probably is. Many stories labeled as 'true story' are based on real - life events, historical facts, or personal experiences. However, without more specific information about this 'Wild Indian True Story', it's hard to say exactly which events it's based on.
Most likely. Since it's called a 'true story', there should be some factual basis to it. It might be about the indigenous people's way of life in the wild, their hunting and gathering techniques, their social structures within the tribe, or their spiritual beliefs. Maybe it's about a specific event like a battle they fought, a journey they undertook, or a discovery they made. But without actually reading or researching more about this particular 'Wild Indian True Story', we can only assume that it is based on a real event.