I think this is because it was mostly a southern state.
Apartheid was a system of institutionalized racial segregation and discrimination of South Africa during 1948 and 1994
In Athenas, 1. The government is a direct democracy, 4. The assembly is the main body of government and 5. Debate is an important part of government.
The people of that generation had little intrest in the problems and crisis of the larger world