Sentence:  It has jailed environmental activists and is planning to limit the power of judicial oversight by handing a state-approved body a <WSD>monopoly</WSD> over bringing environmental lawsuits. 
Meaning of the word marked with <WSD> tags:  A situation, by legal privilege or other agreement, in which solely one party (company, cartel etc.) exclusively provides a particular product or service, dominating that market and generally exerting powerful control over it.