Because the air could be very polluted and they wouldn't want to damage there health. China is one of the most pollutioned countries.
They wear the masks to reduce the spread of Disease...to themselves.
to show where there from...
Masks have been found in tombs in China that are 5,000 years old.
Ancient china
Gasmasken und Filter
Maori do not wear masks.
To filter out gas and offer protection for whoever wore it.
people are pooping too much and it makes masks
Yes, the mayans wore masks in battle to protect themselves.
Bakongo people wear masks for ceremonies, special days and festivals. i dont know why but...
The practice of wearing masks dates back to the 18th Century. People wear masks as they allow them to act in ways they do not normally do and enjoy the festivities.
We do not know and can not tell you because the masks were made by people thousands of years ago and we do not know who invented/made or owned them from this far in the past.