Looks like I'm getting a bit paranoic.
I have an extensive travel history, let's say 30+ journeys in past 4 years, though everything on tourism, it means almost nothing longer than 3 weeks.
Though due to a large number of travels, all of them could not be filled in the Travel History chart. They said "if they are too many, mention the most recent ones"
But the thing is that 9 years ago I spent 2.5 months in the US, and due it was not very recent and I might have deleted the line for it. No violations, no penalties, no fines, nothing. Came in - came out.
I understand that the main purpose of travel history is to find if I spent 6 or more months in any country in order to check the police certificate for it.
But as the US is a "very important" neighbor, may this cause any problems?