UK is dominated and led by the white ethnic English who make up 75% of the population.
In case you have not been following events, the SNP wants Scotland to leave UK since the vote on the EU referendum.
Wales and Northern Ireland are happy to accept English domination as they are too small to survive on their own.
What do you think would happen if this country had 30% whites, 30% Asians, 30% blacks and 10% of all other types? I will tell you that it will be chaotic to run and there is a good chance that there will be a civil war.
So please stop this multi-ethnic nonsense that you have been fed by media and be happy that our homeland BD is a single unitary state. We would have been a lot wealthier than either Pakistan or India now if not for the fact that they are 24 years ahead of us in gaining independence. But things are looking good now as GDP is growing by a shade over 7% a year and infrastructure projects are being built at breakneck speed - granted it is not perfect as Awami League are not exactly the most democratically minded party, but as long as they deliver on economic growth then the majority of BD population will accept their rule.
Yes being sensible and saying that only unitary states work is being racist!
Name me one multi-ethnic state in the modern world, apart from Belgium(and the two ethnicities there actually hate each other), that is economically successful and peaceful?