Some historians may write only to promote a particular cause. Such writing is considered to be

"Propaganda" is the appropriate answer.

Explanation:

Propaganda refers described as the provision of information, in particular of a biased or enhance or alter the appearance, and how it is used to encourage a political viewpoint or perspective. Much of the propaganda list just about all the good benefits of the campaign and reduces the negative features.There will be some who compose propaganda by mentioning have all negative effects including its response, checking to make sure every actual cause is somewhat more appealing to their targeted customers.