It hasn't. Sikhism as a religion still exists.
As a religion Sikhism is against Caste System and Sikh Gurus throughout condemns the practice of caste system. However, due to traditional and social influence as well the lack of Sikhs in understanding their Gurus teachings, it was never been taken out of Sikhism and as such caste distinction do exist no matter even if it exist at lesser level.
yes, because we still exist
yes it does still exist :)
Yes, they still exist.
Yes they still exist
Yes, THEY STILL EXIST
Sri Guru Granth Sahib ji is the last and only Guru of Sikhs after Guru Gobind singh ji. And will remain for the time to come. Nothing can replace Guru Granth Sahib ji. Since Guru Granth Sahib ji is going to exist and hence the Sikhism.
It is called Sikhism.
Sikhism
Yes, many aircraft still exist.
The Inca civilization no longer exists as an empire, but the descendants of the Inca people still live in Peru and other Andean regions. Their rich cultural heritage and traditions continue to be celebrated and preserved by indigenous communities in the Andes.