There are areas controlled by the companies — in this case, the Royal Niger Company.

有些地区是由这些公司控制的——在本例中是皇家尼日尔公司。

The Royal Niger Company was a trading firm that essentially served as an arm of the British government.

皇家尼日尔公司是一家贸易公司，本质上是英国政府的一个部门。