One of the following is not a gearing factor towards the great trek.

The panic that emigration might decline civilization is not a gearing factor towards the Great Trek. The Great Trek was a movement of Boers (Dutch-speaking farmers) who migrated from the British-controlled Cape Colony in South Africa during the 1830s and 1840s. The Boers had a number of reasons for undertaking the Great Trek, including a desire for freedom from British domination, the restoration of their economic, cultural, and political independence, and a fear of conflict on the eastern frontier of South Africa. The Boers believed that the British were encroaching on their way of life and that they needed to establish their own independent republics in order to preserve their culture and traditions. The fear that emigration might decline civilization was not a factor that motivated the Boers to undertake the Great Trek.