Salutary neglect was a policy of "abandonment" - little interference - adopted by the King of England when the Thirteen Colonies wanted independence. Since these colonies offered no riches to England to meet their mercantilist interests, such as gold and silver, the English Crown gave administrative autonomy to the colonists. They began to "self-govern" (but did not become independent) and to administer their own taxes.
These mercantilist concerns were identical to those of other Europeans at the time, such as metalism and the favorable trade balance.
This neglect meant that unemployed Englishmen had opportunities for growth across the Atlantic. These people were mostly Calvinist Protestants who sought religious freedom and peasants who lost their right to work because of their enclosures.
The Salutary Neglect Policy gave the colonists a degree of freedom, both economically and politically. Thus, the first small family properties were constituted. This policy was adopted by England in the early seventeenth century.
Salutary neglect,-Policy of the British government from the early to mid-18th century regarding its North American colonies under which trade regulations for the colonies were laxly enforced and imperial supervision of internal colonial affairs was loose as long as the colonies remained loyal to the British government and contributed to the economic profitability of Britain.
President Johnson proved to be an obstacle to the Radical Republicans in Congress, who attempted to completely overhaul the Southern government and economy.
Answer: The reason it wasn't cold because it was an expression of the cold war, and plus it was mainly because so many people was dying and the war lasted a long time.