Despite not asking for an explanation, I’ll give one anyway since you seem not to have resolved your grievance.
“American” is the correct adjective in English to describe the United States’ people and government. There is simply no equivalent to the Spanish “estadounidense.”
Furthermore, North America and South America are considered to be separate continents, and if you want to refer to them both together, you say “the Americas”, plural.
My first criticism would be that intervening only to restrict Facebook would likely just result in a substitution effect, with instagram, snapchat, youtube, reddit, etc filling the void. Likewise, if I remove cake from my diet for 4 weeks but make no restrictions on all other forms of sugary baked goods, I'm not likely to see the same magnitude of effect as I would've otherwise.
Here's an associational study that found almost 3x odds of having depression between the most and least frequent users of social media sites. This was among US adults aged 19-32 and adjusted for age, sex, race, relationship status, living situation, household income, and education level
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4853817/
So you wouldn't be in favor of a carbon tax? What about a tax on tobacco sales in a universal healthcare system? (to offset tobacco users' additional healthcare costs)
From another one of their posts: "We are launching a crowdfunding campaign in spring, and we will start production right afterward. Our plan is to begin shipping in late summer or early fall."
Harmful crop breeds would have been selected against over the course of many generations, right? Now we're doing it on a larger scale, so the risks and rewards are greater. What is our knowledge of the risks and rewards? Are the rewards aligned with general human wellbeing, or just a profit motive? I don't know.
“American” is the correct adjective in English to describe the United States’ people and government. There is simply no equivalent to the Spanish “estadounidense.”
Furthermore, North America and South America are considered to be separate continents, and if you want to refer to them both together, you say “the Americas”, plural.
https://en.m.wikipedia.org/wiki/Americas