hey,
1. I don’t know what relationship questionnaire is, you probably need to send a webform to get clarifications.
2. Tavel history form is the same, it is on the website form 5562.
3.If it is stated in the email that you should provide PCC for ALL countries you have lived in the last 10 years , then you must provide that of Canadá. Because if you have stayed for more than 6 months in any country, you need to state it in your form and also provide PCC.
But check the email sent to you carefully, sometimes they just might ask you for a PCC of the current country you live in.