Linking the history, geography, and other factors to the similarities of exports and imports of Kenya and Nigeria, what can be the reason for having the same similarities?

Explanation:

Kenya and Nigeria signed seven agreements that will boost bilateral and trade ties between the two countries. The agreements covered tourism, trade and investment; oil and gas, visa exemption for diplomatic passport holders; conclusion of agreements on double taxation; agriculture, livestock and fisheries; and twinning of cities.  Other deals include mutual cooperation between the Foreign Service Institute of Kenya and the Foreign Service Academy of Nigeria.  MoUs were also signed on cooperation in police service, five-year multiple visas for prominent businesspersons, cooperation in the control of the possession trafficking in narcotics drugs and psychotropic substances.

missouri compromise of 1820 which prohibited slavery