Note that Iceland was occupied during WWII, first by the UK and then by the US. The US occupation actually began before Pearl Harbor!
(It was a quasi-sovereign nation at the start of the occupation but later declared complete independence.)
Japan was also occupied by the US, the UK and allies as well.
I’m guessing occupied countries aren’t counting here, but if it does it rules out several more. OTOH you have to consider whether China, for example, was “occupied” by the Mongols and Manchus or not. Neither group replaced the native Chinese and only took over the top government apparatus. And then it’s a slippery slope to many other such examples.
Your grasp of history is on the shaky side. In this context, Great Britain is not a country, it’s just a land mass like Scandinavia or the Balkans. The Britons occupied most of Great Britain, with the Picts in the northern half of what’s now Scotland. Once the Romans lost power there were many small kingdoms across the island.
The Saxons only took a small part of what’s now Scotland from the Britons (in other words there are huge areas that they did not occupy). The Gaels/Scots came from Ireland and conquered the Pictish and British kingdoms, and then permanently conquered the northern part of the northernmost Saxon kingdom, roughly the area between Stirling and Berwick-on-Tweed.
The Normans did not ‘conquer the island’ in 1066 - the Scottish kingdom was by then well established and it was not involved with the battle of Hastings. The Normans did inveigle their way into Scottish life in subsequent centuries, but it’s important to understand that “England” does not equate to “Britain”.
There’s also the question as to where you draw the line between the OP’s idea of taking over a country, and some people moving into an area that might be sparsely populated (as must have been the case everywhere at some time) by other people who had no notion of themselves and the land they used as a “country”. Maybe neither group had such an idea of themselves.
Do partial or short-lived conquests count? How about vassal or protectorate status? Whatever the answers to these, Thailand is not a solution to OP.
England hasn’t been taken over since 1066 (excepting the short-lived loss of sovereignty to the E.U.) but the ethnic/linguistic Thais may have had little or no presence in Thailand by 1066. Instead various parts of the country were controlled by Mon, Khmer, Burmese and Malays — the land was then “taken over” by Thai invaders from the North. Even after the establishment of Thai kingdoms, there were constant wars fought against neighboring non-Thai kingdoms. For example, according to Wikipedia, in 1580 almost all of present-day Thailand was dominated by the Toungoo (Burmese) Empire.
And of course, the Kingdom of Siam surrendered to the Empire of Japan just hours after the attack on Pearl Harbor.
It’s not entirely clear what the OP has in mind. While he does speak of “countries,” he also speaks of “original inhabitants.” The territory of the US was not a country in the sense of a nation-state when taken over by other countries.
North Sentinel is probably occupied by descendants of the people who originally colonized the island, and is not under direct control by anyone else. However, it is under the political control of India (and before that, Britain). India could take control of the island whenever it chooses to; it simply has not chosen to up to this point.
Lots of wars, lots of petty kingdoms, lots of invasions … but these were all Chinese people in a broader sense of the word … I don’t think that area was ever completely overrun by foreigners … meh, it’s the Chinese who claim to be the oldest country in the world …
The UK is still screwing people in the Indian Ocean.
Chagos islanders who were expelled in the 1960s to make way for military bases will not be allowed to return to their Indian Ocean homes, the British Foreign Office has announced, citing the UK’s interest in its “defence relationship” with the US.
Side note. BIOT (British Indian Ocean Territory) is an exceptionally beautiful area popular with fishermen and sailors. The assholes in London want it all for “defense.” Trust me, it makes Wake Island look like a continent, so there’s little defense value, except for that Navy Base at Diego Garcia, which the US happily agreed to allow the UK to steal from the population so they could lease it.
ETA, was popular. Getting a permit to visit takes up to 9 months.
Yeah, I’m not sure whether swelling and shrinking borders, over centuries, really necessarily means invasion. Or if a region being dominated by a neighbour counts as actually losing your country to another power. Ditto things like surrender to the Japanese, when they never took control of the country, as pure political expedience during a time of war, should count either.
I think maybe terms need to be defined more clearly for this discussion.
The United States has never been taken over, full stop. Whatever geographical or political entities existed in the North American landmass prior to the establishment of the United States was not the United States.
The Cape Verde islands were uninhabited until the 1400s, when the Portuguese discovered them and began settling them. The islands were attacked a few times, but never conquered. They are now an independent nation.
Thailand was conquered by Burma in 1350 but reemerged shortly thereafter:
That’s a bit more tricky. Thailand didn’t surrender to Japan, it in fact joined the Axis and declared war on Britain and the United States. After brief resistance to Japanese forces, Thailand acceded to Japan’s demand that Japanese forces be allowed military passage through the country. Already by 1942 though there was a deep split in the government, with the country ostensibly allied to the Empire of Japan and at war with the Allies but with a large and active pro-Allied resistance movement.
The Polynesian population on Easter Island declined but was still present when Europeans arrived and when Chile took it over. You may be thinking of Pitcairn.