No, Snapchat doesn't seem to be able to detect if you've shared someone else's story. There's no feature that gives an indication of such a thing.
Snapchat likely cannot detect if you shared someone else's story. Consider how Snapchat operates. It's centered around personal expression through stories and snaps. While it tracks views and some interactions, sharing someone else's story isn't something that Snapchat has made a point to monitor. There are no obvious signs or alerts within the app that would suggest it can detect this. So, in all likelihood, you can share someone else's story without Snapchat being aware of it.
No. Snapchat is mainly concerned with the creation and dissemination of stories by users themselves. It doesn't keep tabs on whether a story has been shared further.
You shouldn't do that. On Snapchat, making someone else's story yours could lead to violations of terms of use and potential consequences. It's better to create your own unique and original stories.
Yes, Snapchat has certain tracking mechanisms that can detect if you shared a story.
No. Posting someone else's snap to your story without their permission is a violation of privacy and Snapchat's terms of use.
Yes, you can screenshot a Snapchat story, but the sender may be notified depending on their settings.
Friends of the person who shared the story can view it.
No, Snapchat doesn't show you if you're on someone's private story. It's private for a reason, and that includes not notifying people who can view it.
No, Snapchat doesn't have a feature that lets you see if you liked someone's story. Once you've interacted with a story by liking it, there's no easy way to confirm that action later.
Yes, you can screenshot someone's story on Snapchat. But the person who posted the story will be notified.
Sure, you can. It's a common feature of Snapchat to allow comments on stories.