Question about a container under the engine

Hello! Hey, I have a 1981 Ford F100 Ranger Lariat with the Special Trailer Heavy Duty Tow Package. I see a container that is under the engine almost because of the battery, the truth is that I don't know what it is for but it has a line connected, I will post an image of the container. I would be very grateful if you could help me solve this doubt.

that is the fuel vapor canister. it is plumbed in between the fuel tank vent and a timed port on the carburetor.

That's your charcoal canister (vapor canister)

Just fyi - you've posted this in the new members section. To get more eyes on your posts (since you did the new member post already), you can post in the main forum.

And if you have dual tanks you get 2 containers
Dave ----

I thank everyone who responded very much, the truth is I didn't know what it was

there are possibly many questions that will arise. just ask. even if only to help those hesitant to ask the same.