If given the environment to develop, any race can become as smart as another as shown with history.

Now you are correct. However that environment doesn't mean having schools or living on magic dirt. The pressure needed would be to mercilessly cull the dumbest part of the population for a hundred generations. That's how nature did it, and its what happened to the people who settled the frozen north and died off in massive numbers when they failed to to manage winters. Evolution is a death-engine, and IQ is bought with a gigantic pile of corpses of (other peoples) ancestors.

Genetic IQ is a ceiling, and 80% of actual intelligence. The remaining 20% is about avoiding or suffering from stunted growth, nutritionally and environmentally. No matter how many vitamin pills you eat or how much education you get, this will never raise your maximum potential intelligence.