Why is xhtml needed?

Related questions

1. Can I convert HTML to XML?
2. What is the full meaning of xhtml?
3. Should I use html5 or xhtml?
4. What is difference between html5 and xhtml?
5. What is xhtml in computer?
6. What is difference between html and xhtml?
7. Is xhtml the same as XML?
8. Is xhtml still used?
9. What is xhtml 1.0 transitional?
10. What is xhtml 1.0 strict?

Tags

1. #consistent
2. #comparison
3. #gives
4. #browsers
5. #format
6. #easily
7. #structured
8. #parsed
9. #strict
10. #future
11. #processed
12. #helps
13. #webpages
14. #accessible
15. #rules
16. #better
17. #create
18. #syntax
19. #present
20. #formatted
21. #makes
22. #xhtml