When was Social Studies introduced in Ghanaian schools nationwide, simultaneously and made compulsory as well?​

1972

Explanation:

It was first introduced in the Primary Schools in 1972, where it was called Social/Environmental Studies. Also in 1976, all Teacher-Training Colleges in Ghana were asked to start the preparation of Basic School teachers. The above continued to be the situation until the new Educational Reforms of 1987.

[content deleted] - user123802726recklesschicken

misty passage from the question