sentences:  Toledo mentions the reintegration of the indigenous populations into the Peruvian social and political system as a key to sustainability and economic growth.Advocates of indigenous rights have also criticized some of Toledo's efforts to jump-start the economy through investments, such as his support for the Camisea natural gas project and other projects that involved exploring or developing natural resources.These critics claim that companies buy land at unreasonable prices, force indigenous people off of land that is historically theirs, and exploit natural resources in ways that are harmful to communities and the environment.