Final answer:
The statement is false; developed countries are industrialized with strong, wealthy economies, unlike less-developed countries which face various economic and social challenges.
Step-by-step explanation:
The statement given is false. Developed countries are in fact the opposite of what is described; they are highly industrialized and have strong, often wealthy economies.
In contrast, less-developed countries (also known as developing or Third World countries) are those not classified amongst the high-income nations.
These countries typically face challenges such as high population growth, higher mortality rates, and shorter life expectancy, accompanied by less access to healthcare, education, and technology.
Moreover, the characterization of developed countries having widespread strife is misleading, as higher levels of development generally correlate with more stable economic and social conditions.