Question

why is black considered to be a sign of mourning

Answer 1

it show the sign of respect.In some country like india and china people wear white .

Answer 2

HERE IS YOU ANSWER

ITS SHOWS SOME SIGN OF RESPECT , SAME AS TO TWO COUNTRIES INDIA AND CHINA.

INDIA

LET ,INDIA WEARS WHITE THAT SHOWS SHOWS RESPECT TO CHINA.

CHINA
LET, CHINA WEARS BLACK THAT SHOWS RUDE TO INDIA.