Will it be moral to copy all city pages information for all cities in my country from Wikipedia? I need those for my website. How can I do it?
Wikipedia uses the Creative Commons 3.0 Share and Share Alike license which means that you can copy the content but it requires proper attribution.
Wikipedia offers free copies of all available content to interested users. These databases can be used for mirroring, personal use, informal backups, or database queries (such as for Wikipedia:Maintenance). All text content is licensed under the GNU Free Documentation License (GFDL).
If you need only English content, you can fetch the English Wikipedia MySQL dump.
You can also access any article programmatically, one at a time in XML or as an RSS Feed.
You can even collect multiple Wikipedia pages in a basket and convert them all to a single PDF document (just like an ebook) with just a few mouse clicks and offer this is a download.