Answer:
Grant was more methodical while Lee had more tatical plans
With decentralization, the power is distributed among many people instead of vested in one emperor. This means that each person will have less power overall. In addition, each individual will then try and gain power of their own over each other, weaking the original emperor's influence even more. Hope this helps!
While they were ruling over India, they wanted to divide the unity of the Hindus and the Muslims. Because the British knew if the two fight united against them.