How did the Aborigines help Charles Sturt?

Sturt was an explorer who made a point of trying to befriend Aborigines along his journey. As a result, they stopped his party from being ambushed.

The main incident was when a large group of rather aggressive-looking Aborigines awaited him near the junction of the Murray and Darling Rivers. As they raised their spears and Sturt reluctantly ordered his men to raise their weapons ready to fire, a tall warrior whom Sturt had befriended upriver came rushing down and, judging by his gesturing and manner of speech, persuaded the large group of Aborigines not to attack. This warrior was regarded with great respect by other tribes, so he was apparently a type of ambassador among the tribes of the area.

A similar thing happened when Sturt ventured into the desert in search of the inland sea he thought must exist. Again, he met with a group of Aborigines, and one of these took on the role of ambassador, introducing Sturt to other groups of Aborigines they came across during their trek. These Aborigines subsequently helped Sturt by offering him shelter and water, and even roasting a duck. They also tried to indicate to Sturt that there was no water to be found to the east, but Sturt went that way anyhow.