Answer: masculine stories of violence and bloodshed.
Okonkwo often tells stories of violence and bloodshed to his sons. This is because he has a very traditional view of men. He is proud of his position in the clan, and believes that men should be powerful and strong. However, most of his life is in fact dominated by the fear of being a coward like his father.
Repetition usually tells us that the someone wants a large emphasis on this word: that it has a significant meaning to them, and/or possibly the whole tale itself.
Because America already existed and was already there with indigenous people occupying it, therefore he was entering and possibly invading it rather than discovering it