Are you talking about Europeans?
Try a minumum of 15,000 years ago, and most likely longer, some possible evidence indicating as much as 35,000, if not longer, for Native Americans. At that time modern Homo Sapiens from Africa and Asia were still raping Neanderthals in Southwestern Eurasia to produce Cro Magnums and much of Europe was still frozen under ice, including where your ancestors settled long AFTER people got to the Western Hemisphere, land uninhabitable even to Neanderthals.
No industry? As compared to what? The industrial age had not begun yet anywhere when Europeans started arriving. They did, however, have manufacture, and unlike Europeans (every bit of technology they utilized originated in East, Central, and Asia Minor (Middle East), theirs was developed independently.
75% of all agricultural species used througout the world today originated with Native Americans, including the most widely grown staples of corn and potatoes, or have you not looked at what you ate for dinner?
Conversely, every single domesticated species in Europe prior to trans Atalntic contact came from Asia, except, yup, the bunny rabbit. PERIOD.
Other than the bald eagle and the black bear, those animals in the pic are Eurasian, and arrived not too long before Native Americans did, who followed them. Pretty sure they would have built a wall if they could back were they migrated from, seeing as their brethren there are extinct in most of the range they're indigenous to.
Inuits were the last native group to arrive in North America, betwen 2000 - 5000 yrs ago.
Regardless, even if all got here 1491, they were still already here first, and there ain't a damn thing you can do to change that.
As much as you may beg for it in this meme, pity is irrelevent. Facts are still facts.
Scuse my typos.