The correct answer here would be assimilation. assimilation<span> is the process in which a minority group or culture comes to resemble those of a dominant group.</span> This is a process or another part of adaptation involves changing or altering our existing schemas in light of new information.
The correct answer is currency which is letter b. This is the first development of Aksumites without having any pressure from the outside culture as their currency was coinage produced and were used to their Kingdom which held a great significance.