The Mayans had mastered water pressure and had fountains and toilets as early as 750 AD.
Aztecs had running water and sewage.The Victorians In the mid-1800s were dying of cholera because they just dumped their raw shit in the river Thames. They wouldn’t shower for months at a time because they were afraid of the polluted water.
Incans had created aquaducts in the slopes of the vast Andes mountains to reach the emperor, cities and farmers who used agricultural terraces.
Mayans, Aztecs, and Incans were far more advanced than the savage Europeans.
Incans were also performing successful brain surgery and had simple democracy hundreds of years before anyone in Europe thought about either of them.
They also expanded their empire vastly through peaceful means like marriages and didn’t participate in slavery, but that’s beside the point.
This is mostly accurate, but trepanning has been found in pretty much every civilization in the whole world dating as far back as prehistorical times. Its basically just drilling a hole into the patients skull.