I am delighted to write the foreword for this book. The Ministry of General

Education and Instruction (MoGE&I) has developed the Accelerated Learning

Programme (ALP) textbooks based on the National Curriculum of South

Sudan.

The textbook was written to help learners develop the background knowledge

and understanding in the subject. It is intended largely to serve as a source of

knowledge and understanding of the subject concerned, but not to be considered

as a summary of what learners oug...