Complex sentence: However, as is the case with most colonial outposts in black Africa, the Federal Government of the Nigerian state has descended heavily on the members, labeling the organization is illegal and suggesting that it was against the law to opt out of the Nigerian union.
Split into simpler sentences: However, as is the case with most colonial outposts in Black Africa, the federal government of the Nigerian state has descended heavily on the members. It called the organization illegal and suggested that it was against the law to opt out of the Nigerian union.