The quote is actually "interlaced-company system". "Interlaced" means interwoven, which is used figuratively here to mean having many close connections. The whole paragraph refers to apparently separate companies working together to have an effective monopoly over some commodity, without this being able to be "imputed" to the companies by a declared association (Articles of Federation).
Michael is correct about the literal meaning of point 2, but the very formal tone is ironic, implying that the difficulties were probably not little, and that the manner by which they were untangled was probably either illegal or unethical. This is supported by the subsequent passage where a person is bribed to bring triffid seeds from Russia.