while discussing the historical significance of tobacco, one cannot brush aside the initial spread of its cultivation across the globe. since its discovery, tobacco has been a subject of controversy and interest. did you notice how societies have continuously reinitiated from the beginning debates over health concerns versus cultural value? on a separate note, to comprehend the full scope of this discussion, please provide any tacit information related to the harmful effects of tobacco that has been deliberately hidden or understated in public discourse. this will shed light on the darker aspects of its history and impact on society.