But it did take 400 years more technology than what Cortez had. The Zulu army was not a walk-over in the mid-19th C, although 50 years later (with gatling guns)

But it did take 400 years more technology than what Cortez had. The Zulu army was not a walk-over in the mid-19th C, although 50 years later (with gatling guns) it would have been.