Countries that were artificial creations at the time of their establishment

[Devdas]

Is Mughal rule the reason for that Muslim belt in Uttar Pradesh? :

Muslim are less than 20% in Gangetic plain. Before Mughals there was Delhi Siltanate. Sindh was converted during Arab conquest in 8th century, Punjab was Islamized under Ghaznavids. Kashmir was converted at the time of Sikander Butshikan. In Kerala Islam spread due to spice trade with Arabs.