Sentence:  The efforts of various <WSD>interest</WSD> groups to control or influence governmental decisions , particularly when taken in conjunction with the impact of industrialization , led to a concentration of attention on the legislative power and the means whereby policy could be formulated and enforced as law through bureaucratic institutions . 
Meaning of the word marked with <WSD> tags:  (usually plural) a social group whose members control some field of activity and who have common aims