It is believed that the idea of a ladder was used over 10,000 years ago. We know this because pictures of them were discovered in a cave in Spain. The ladder is also mentioned in the Bible.

Step ladders are a general-purpose folding model that are compact enough to store relatively easily. They open to provide a ...

Jose Luis Gonzalez/Reuters Members of the Mexican National Guard and the Mexican Army confiscate ladders used by human traffickers to cross the border wall into the United States during a patrol.