Why did West Bengal have to be renamed as 'Bangla'?

Why did West Bengal have to be renamed as 'Bangla'? lotari song bad west bengal song bad; Lottery live; lottery live result; lottery sambad live; nagaland west bengal state lottery; nagaland state lotteries; dear lottery result in lotari song bad morning west bengal lottery result today nagaland lottery sambad nagaland song bad lottery

lotari song Dear Lottery sambad results, also known as Nagaland lottery or Nagaland state lottery sambad People from Nagaland, West Bengal, Kerala, and ten other states