Concept:The Great Trek produced political, social, and economic effects, and the correct option is the statement that does not reflect these real consequences.
Explanation:The Trek led directly to the founding of the South African Republic, the Orange Free State, and the Natalia Republic. Option C is therefore an actual effect.
The Afrikaners remained politically divided for many years, so option A is an actual effect.
The isolation of the Boers from coastal authority caused cultural and economic isolation, making option B an actual effect.
However, trade between black and white groups was not reduced by the Great Trek. In fact, the Trek stimulated trade between these communities while increasing conflict between the Boers and indigenous tribes.
This makes option D a false statement because it presents the opposite of what happened.
Answer:D. It reduced trade between black and white groups.