Resent the destruction of the southern economy
You can do this in a variety of ways. If one has the money for it you can start bribing mayors and law enforcement officials to look the other way and gain influence. If there is a racist movement going on campaign in favor of that to feed off of those angry people. This is like how Hitler became Chancellor of Germany.
Another way is to start a revolution in the country against something that the citizens are very unhappy with. Declare yourself as the leader of the revolution. Make sure the revolution is a success. When the revolution is a success, you will be seen as a hero and instantly gain favor of the people. Once this happens make sure you remove all rivals (personal rivals, political rivals, so on) from the country and start centralizing your power. Start spending country funds on militarization and starve your people to intimidate them. Make your people worship you. Have pictures of you, the Great Leader, in the living rooms of every house by law. This is how the leaders of North Korea have done, and they are still worshipped by their people today.
The Mandate of Heaven concept helped individuals or groups of people gain power in a civilization. An individual would claim that they had received a Mandate of Heaven which granted them divine recognition to rule. By claiming their authority came from the gods, the people would accept them as their leader.
Hope this helps!!
New Netherland did not win over Holland through force. From the year 1664 to 1673, Nieuw Amsterdam was in New York, however, in that year it ended up plainly Dutch yet again, this time under the name Nieuw Oranje, `New Orange.' The Anglo-Dutch war was finished by the Treaty of Westminster of 1674.
