http://www.freepatentsonline.com/article/Contemporary-Econom...
TLDR:-
1. Decades of intensifying international isolation over RSA's political climate.
2. RSA's growing reliance on international short-term loans in 1980s, leading to balance of payments crisis.
3. Threat and introduction of economic sanctions by international community.
4. ... Leading to increasing economic costs to industry and individuals, which reduced internal support for Apartheid amongst South Africa's elite.
5. Coincidental fall of the Soviet Union, leading to the West's reduced support of RSA against revolutionary front-line states.
(Not to discount the struggle for equality amongst non-white South Africans, embodied by Mandela and others.)
EDIT: Clarity
http://www.freepatentsonline.com/article/Contemporary-Econom...
TLDR:-
1. Decades of intensifying international isolation over RSA's political climate.
2. RSA's growing reliance on international short-term loans in 1980s, leading to balance of payments crisis.
3. Threat and introduction of economic sanctions by international community.
4. ... Leading to increasing economic costs to industry and individuals, which reduced internal support for Apartheid amongst South Africa's elite.
5. Coincidental fall of the Soviet Union, leading to the West's reduced support of RSA against revolutionary front-line states.
(Not to discount the struggle for equality amongst non-white South Africans, embodied by Mandela and others.)
EDIT: Clarity