In what year was the Oil River protectorate established?

The Oil River Protectorate was established in the year 1885. It was a British colonial administration that controlled the area around the Niger Delta in what is now Nigeria. The protectorate was established to control trade and protect British commercial interests in the region, including the export of palm oil. The name "Oil River" was given because the Niger Delta region was known for its abundant oil palm trees, which were a valuable resource at the time. Therefore, the correct answer is 1885.