Despite the British ruled over India for 339 years (East India Company arrived in India in the year 1608 and in 1947 India declared herself an independent nation) still Indian couldn't move ahead in the development like Hong Kong, Singapore, Brunei, and many other British colonised nations of the world. It might be due to the CASTE (Varna) SYSTEM created and promoted by the holy scripture THE LAW OF MANU, written by Indian Brahmin sage inbetween 200 BCE and 200 CE is strongly prevailing in India, which has affected Nepal as well very badly that has been creating social disharmony promoting caste and gender-based discrimination in our beautiful Nature made Heaven and ill minded irrational thoughts and religious and caste inflicted mindset of men is Making Hell to our beautiful nation.
My above statement supports by this statement:
"The 2,000-year-old Hindu caste system remains the most powerful force in Indian society. Broadly speaking, the caste system has Brahmins and Kshatriya at the top of the social order, followed by the trading castes known as Baniyas and scores of laboring castes such as the Yadavs, and beneath them all the erstwhile untouchables, whom the constitution calls the Scheduled Castes and Scheduled Tribes."
The LAW of Manu in its Chapter 1 verse31 said that "But for the sake of the prosperity of the worlds he caused the Brahmana, the Kshatriya, the Vaisya, and the Sudra to proceed from his mouth, his arms, his thighs, and his feet."
Hehehe! WHAT a joke that people can be born other than Vagina, normal birth canal of all human beings. I didn't know that. This is the reason WHY I've to be skeptical and cynical about so-called holy and sacred books made by ill-minded cleaver men to control over mass telling them "If you don't follow religion and believe on GOD then you'll GO TO HELL". Hehehe! in reality they also don't know where is the HELL! Bullshit mind of ill minded cleaver men!!
I thought that okay this Law of Manu is a scrap BUT another great holy scripture, The Bhagavad Gita is good BUT it also support the notion of the caste (varn) as stated in the Law of Manu and says:
 The works of Brahmins, Kshatriyas, Vaishyas, and Shudras are different, in harmony with the three powers of their born nature.
 The works of a Brahmin are peace; self-harmony, austerity, and purity; loving-forgiveness and righteousness; vision and wisdom and faith.
 These are the works of a Kshatriya : a heroic mind, inner fire, constancy, resourcefulness, courage in battle, generosity and noble leadership.
 Trade, agriculture and the rearing of cattle is the work of a Vaishya. And the work of the Shudra () is service.
Source: [chapter 18, Juan Mascaró translation, Penguin Books, 1962] http://www.friesian.com/caste.htm
In the caste system hierarchy on the top there is Brahmin (Bahun) followed by Kshatriyas (Chhetri), Vaishyas and Sudras (untouchable) in the bottom and those who doesn't fall under this category such as Rai, Limbu, Sherpa, Magar, Gurung, Tamang, Chepang, etc indigenous communities of Nepal are also considered untouchable by Brahmin and Chhetri. Sudras is also called Dalit officially in Nepal and India but under this definition indigenous communities don't fall.
Generally, Dalit and indigenous communities say that caste system is shame and they condemn caste system because they themselves and their community have been victimized since ages because the Law of Manu verses had been incorporated in the Law of Nepal from the very early time and heavenly influenced by man-made religion the that has promoted caste system as well as gender based discrimination in Nepal and committing GENOCIDE of these groups by those who ARE in the higher level of this caste hierarchy and they are very Proud of being privileged group that's why they don't condemn and STAND UP to eliminate or eradicate this ancient Indian Brahmin sage created CASTE system. Instead they said it (caste or varna system) was required at that time. If that was required at that time then WHY it was not required in Europe, Africa, East Asia, USA, UK, Germany, etc and despite British ruled over India more than 300 years WHY they are still couldn't advance at the level of Japan, Korea, China, Europe, Australia, Germany, USA, etc if it was still required at that time. These are the insane reasons that they LOVE to give. Ill minded and ill intentional people love to give just the justification rather than trying to eliminate such practice from Nepal.