351337 Global Websites structure

This is not for design or coding, this is to provide information on how to do the following. I am going to describe what i want done, and I would like you to describe exactly how this can be done in detail in a report with references and examples. You will not be doing any actual design or coding. To sum it up, I will have approx 50 websites with different contact information. I would like to control all the content, text, pictures, documents, etc... from one database or central website. This project will be to explain how the following is done: - there will be 50 websites for 50 different cities. - One main website template will be created and uploaded to each domain. - each website will have the same content, but certain words or content will change depending on the city . For example [login to view URL] "welcome to New York website" . certain values will need to be set for that domain (city name, phone #, address, email, text within a page, etc...) I would like this data set from central database. - The header will be different for each site - some photos will be the same for each site (photo album), but I would like to add or remove photos from a central location. - page content, i would like to be able to add or change the page content for each page from a central location. Will be the same for all sites (except for city specific text, etc..) - Wordpress - Want to have wordpress, but it will be the same content on each site. Managed from a central site. - Language files. Want to include language files. Want to control which language files are shown on each site separately from a central location. Add new language files in the central location. - and other suggestions to basically control all the sites from one location, or adding your own ideas. - The sites must be optimized for speed and search engines and must be stable. Again, this is not a project to do the above work, but rather create a report explaining how the above work is accomplished. Please post your experience and how you could help in PMB. All auto bids or message will be ignored. Experienced programmers only. If you know of example sites use something similar, you can post in PMB. Thank you