Tech startups, wise investment, and natural resources are all pretty solid industries to involve yourself in if you wish to one day hit that sweet seven-figure mark. But what about starting an empire? And not just a tech empire, but a real empire? You know, gigantic armies, vast lands, and never-ending resources.

This would be the pro-tip the gentlemen on this rich list would give you, as you can tell from their professions. Their empire building, whether business-focused or land-focused, generated the largest amounts of wealth ever conceived. Here are the top 10 richest men of all time.

All amounts are a rough estimate of modern net worths converted to AUD.

Source: MSN