render difficult

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Noting that packaging waste markets have developed gradually since the mid-1990s, the report notes concerns that some member states might insist collection systems for household packaging waste cover the entire country, saying "this might render difficult the market entry of new waste management systems", although it would at least prevent operators 'cherry-picking' the most profitable regions, notably cities.
Different analytical concepts and the distinction between building and sustaining democracy render difficult a systematic explanation for the role and import of associational life in democracy in the Western and postcommunist worlds.
All these facts render difficult the interpretive task of understanding his argument.