Answer:
Without the furs supplied by the Tlingit and the sea otters supplied by the Aleuts, the Russians would not have been successful in colonizing Alaska.
Step-by-step explanation:
The fur trade was the main reason for the Russian presence in Alaska, and it was the Tlingit and Aleut peoples who provided the furs that were highly valued in Europe and Asia. Without their contribution, the Russian colonial enterprise in Alaska would not have been economically viable.
I hope this helped!
~~~Harsha~~~