The southern industry was less successful compared to the northern industry at the course of the American revolution because the south mainly is sustained by agriculture which is less superior compared to the rapid growth of industrialisation in the Northern region due to many settlements.
At the end of World War I, due to mounting war debts, the recently established Income Tax was drastically increased from a top marginal rate of 15% in 1916 to over 75% in 1918. After the war ended, the Government drew down the military and eventually changed its policy towards income tax, bringing it back down into the 20s.
The tax system was abolished and this was true about Chandragupta's rule of the Mauryan Empire. The correct option among all the options that are given in the question is the last option or the fourth option. Chandragupta was actually the founder of the Mauryan empire and it flourished greatly.
The scientific method is a tool of investigation that has proven to be very effective and is the best that we currently have. With the method of scientific inquiry we are able and have been able to reveal and explain the very fabric of existence!