Original sentence: He branded the system as a policy of "good-neighborliness", stating that different races and cultures could only reach their full potential if they lived and developed apart from each other, avoiding potential cultural clashes,  and that the white minority had to be protected from the majority non-white in South Africa by pursuing a "policy of separate development" namely apartheid and keeping power firmly in the hands of whites
Edited sentence: He branded the system as a policy of "good-neighborliness", stating that different races and cultures could only reach their full potential if they lived and developed apart from each other, avoiding potential cultural clashes as they share different values and beliefs, , and that the white minority had to be protected from the majority non-white in South Africa by pursuing a "policy of separate development" namely apartheid and keeping power firmly in the hands of whites