What was the impact of the prohibition of marriages act in africa on other parts of the world?

Other countries were dissatisfied and disliked the apartheid policies but they couldn't act on it since it was a domestic affair and not an international one. What they could do was disprove of it in public and introduce sanctions because they perceived that the apartheid policies were against human rights and they did it without intervening.

They had strained relationships with colonists but good relationships with american indians