Wikipedia may not always be the most accurate source of information, but it is one of the websites that quite a few people use on a daily basis. Below we'll see how you can access the page even when you don't have an available connection at Internet.
Wikipedia creates very regularly copies security of its database that has them for λήψη. So we can literally download it by clicking here on our pc, since the file is a copy of the website available to anyone who wishes to download it.
Can be used for "mirroring, personal use, for informal backups, offline use or database queries".
At this time, the entire file is 14GB compressed data, or 58GB uncompressed, and is within the capacity limits of a USB stick.
So all you have to do is download the file by saving it to a USB of your choice.
Download all Wikipedia