UBC Press, the publisher, reports:
Daniel Rück reveals increasingly powerful and aggressive colonial governments interfering with the affairs of one of the most populous and influential Indigenous communities in nineteenth-century Canada. What he describes is an invasion spearheaded by bureaucrats, Indian agents, politicians, surveyors, and entrepreneurs. Although these invasions were often chaotic and poorly planned, Rück shows that despite their apparent weaknesses they tended to benefit settlers while becoming sources of oppression for Indigenous peoples who attempted to navigate colonial realities while defending and building their own nations.
You may not be a legal historian, but books selected for the Osgoode Society collection have a good track record for winning the CHA Prize and other historical awards; you might want to be aware of them.