science, architecture, and technology.
i believe it would influence their own way of understanding things. it shall be a foundation where they can draw or start an argument. historians are also scientists that have their tools of analysis and expertise to unlock a variety of difficulties such as relationships of man, origin, politics, economy, and culture. based on facts and understanding on these areas, they may shade light to extract ideas and develop options to validate a hypothesis or debunk it.
the correct answer is the movie industry
because thomas edison developed the kinetograph which allowed for cinema projections.