B. Confederate states refused to send troops to the US army.
The Mughal Empire dominated most of northern India from the sixteenth to the eighteenth centuries. The Mughal rulers practiced the Muslim religion, but most of the population they governed practiced Hinduism. Even so, the Mughals succeeded in their domain. They worked to bring Muslims closer to Hindus in a united India.
In World History, a declaration of independence does exactly that: declare a country's independence from a mother country. For example, the United States declared independence from England, and Comoros declared independence from France.