Given a travel related situation, and given a specific question about the situation, summarize the question into a title
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Question: We have the report of a Ghanaian-American dual citizen, recently naturalized, presenting their new USA passport at the UK border answering "yes" to the question "have you ever had any problems with immigration anywhere" and getting in some trouble (although no refusal).

We have the CBP answering in essence, the two passports of a dual citizen are completely independent.

Is it the person or is it the nationality? Is the question "have you ever had any problems with immigration anywhere" to be understood on its face value, where "you" is the biological person or is it "you as a citizen of the country your passport you are presenting to us" and they do not give this tirade every time because for the overwhelming majority of passengers the two are the same? Is your new passport a clean slate? Or do you carry the problems resulting from the heightened scrutiny of your other citizenship forever? Is it possible for a border guard to swipe my Canadian passport and be aware of the history of my Hungarian passport? How entwined are my two inner citizens :) ?

Let's restrict the question to those who have at least one citizenship in the Five Eyes countries (Australia, Canada, New Zealand, the United Kingdom and the United States) and one of the Five Eyes borders.


Answer: Can the border guard match up the passports of a dual citizen?


Question: I'm planning to have a trip around in Peru and I was wondering if I can just reserve the hostels on the day I arrive in a new city or if I should call them a few days before. I'm traveling in April.

I can also try more than one hostel, of course I need to arrive before evening in each new location. 


Answer: Peru: Can I reserve the hostels on the same day I arrive in a new city?


Question: A few weeks ago, I booked a flight with Transavia going back from Prague to Paris on the Wednesday 10th June 2015.
Yesterday, I received an email saying "your reservation has been updated, click on the following link to see the new time for your flight" and on the linked web page, the flight appears to be on the 12th June.
I have not acknowledged the change yet.

Changing the "time" of the flight by 48 hours seems a bit extreme to me.

Is that legal at all? Is there any procedure to ask for compensations for the additional time off work I'll need to take or for the extra hotel nights ?


Answer:
Flight rescheduled, what are my options?