At which stage of ethical decision making do groups have an influence on what is acceptable and what is not?

Groups have an influence on what is acceptable and what is not during CONVENTIONAL stage of ethical decision making

in the CONVENTIONAL stage of ethical decision making, the group started to develop a sense of morality in order to fulfill society's expetation toward them. This lead to a development of moral guideline that determine what actions are wrong and what actions are acceptable.

Ghana, first of the great medieval trading empires of western africa (fl. 7th–13th century). it was situated between the sahara and the headwaters of the sénégal and niger rivers, in an area that now comprises southeastern mauritania and part of mali.