In general, no, Canvas provides limited information about who did what in a course. You can see the edit history of a page, as linked by @jsowalsk, and you can see who uploaded a file (in Files) and reasonably good information about the grading process in Speedgrader. But you can't see who created an assignment or who published that assignment in the regular interface. There are sometimes back-end data ways to find this information but that would take the work of an admin/developer - you might reach out to your institution's Canvas admins for guidance on what is possible at your institution.
