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If Croatia is part of the EU, why do Croatians need special permission to work in the UK? French, Hungarian, or Polish citizens don't need that.

I (US) am engaged to an Australian, and we'll be getting married in her hometown. However, we do not plan to stay in Australia after getting married. Do I need that $7000 visa if I'm just going to be in Australia for three weeks and not working?

I recently bought some cheap $10 earphones at the store and instead of the volume controls typical of iphone and android headphones these days, it had the old fashioned slider (which I assume is some sort of potentiometer or something, but I don't know much about electronics). That then made me wonder, If I set my phone volume to 100% and turn that down to halfway, does it consume the same amount or less electricity than if I just set my phone volume to 50% and keep the headphones all the way up (assuming that both of these keep the volume the same).

I have a hypothetical situation:

Lets suppose I (non-UK/EEA*, and not living in the UK) married my girlfriend (non-UK/EEA, but living in the UK on a visa) outside of the UK (it's a long-distance relationship at the moment). Then I'd get added on as the spouse, right?

Now let's we wanted to get married in the UK? Is there a way I could come live in the UK in the months leading up to wedding?

^((*but lets be honest... the Brexit camp is going to screw up the EEA thing anyway, right?)^)

I've been looking for an entry-level Python or Java developer job (I'm switching careers), and so I've been using all of the websites I know. I often get calls from unenthusiastic-sounding, [supposedly] NJ-based recruiters whose accents I can barely understand about jobs I never applied for that require experience I don't have for technologies I've never used. I'm okay with commuting from Brooklyn to Jersey City, and there's nothing wrong with accents, but it's a bit suspicious that every recruiter from NJ that I have spoken to has a foreign accent and is offering jobs I never applied to. I've given information to three or four of these guys, and I feel like that has just led to me receiving

I was in the UK on a tier 4 visa while I did my masters, and I left a few day ago when my visa was expiring. My girlfriend (also on a tier 4 visa) is still there working on her PhD, so obviously I'd like to visit her. I'm not planning on going in the next four months, but I'd like to know how long I should be away before I can visit.

(I must also add that my passport is from a country that doesn't need a visa to visit the UK as a tourist.)