I tried to create a new account at developer.force.com, but when I login and go to setup, I don't see an option to create a sandbox under DataManagement. Also, I don't see sample apps like volunteerforce which I used to see with my previous developer account. Strangely in the apps dropdown list, I see apps like marketing, call center etc.

My current developer account has an option to create sandbox. I don't see any difference in the way I created these two accounts. How do I get the sandbox option for this new account?

One difference I see is, the new account has the user profile of "system administrator" where as the current account is in the profile "platform system admin". This "platform system admin" profile is not there in the new account's manage users menu

Thanks for any help regarding this