By working in the city-state and contributing to the economy of the city.
It is risky to invest in a commodity because: <span>The commodity's price might drop significantly very quicklly
</span>Commodity products are circulated really quickly. This will affect the rarity of the product in the markets. If the rarity is high, the price will increase and vice versa. This exact condition makes the price for that commodity also fluctuated really quickly.
