>>519480090 (OP)
The caste system isn't what's holding jeets back, it's jeets. The only way to fix them is to enact a brutal dictatorship led by Whites that culls the scamming polluting rapist genes from their gene pool for millennia without ever letting up. Ideally this would mean killing all jeet men and extensively bleaching the women while continuing to cull any resulting boys for at least 10 generations. Even with all of this, they still may not end up being fully human.