Answer:
It did not rely on enslaved laborers.
This is because they did have slaves as the lowest class, but they did not rely on them to build things. The only times they relied on the slaves was when they needed extra soldiers for wars, or needed something built urgently.
Explanation:
<span>After refusing to repay their debt following the Mexican-American War, European powers decided to implement a navy blockade onto the country, which would ultimately restrict an array of goods and products from coming into the country, further crippling their economy.</span>
if I remember correctly it's the Sumerians