They were not protected by the government
A company with a pure monopoly means that a company is the only seller in a market with no other close substitutes. ... Also, with pure monopolies, there are high barriers to entry, such as significant start-up costs preventing competitors from entering the market.
A linguist studies language in a scientific way; so not just a certain language like Spanish, Mandarin or such, but how a language is written, communicated, it's forms, etc.
Khmer Rouge is associated with Cambodia.
Its in Indian subcontinent. so its Mughal.
Thanks.