Concept:The Great Trek involved the movement of Dutch-speaking settlers into the interior of Southern Africa to establish independent territories.
Explanation:The Great Trek was undertaken by Boers, also known as Voortrekkers, who were dissatisfied with British rule at the Cape.
They migrated inland to escape British control and find new land.
This migration resulted in the expansion of white communities deeper into South Africa.
The trek did not aim for black-white equality, nor did it involve Africans annexing white communities or restricting white movement.
Therefore, the most direct outcome of the Great Trek was the spread of white settlements.
Answer:A. the expansion of white communities in South Africa.