Alaska is the biggest in terms of sq miles
Answer:
I don't think it was because your room wasn't clean. The main cause of bed bugs is travel, which means most likely you got one on you when you went outside or something, and you accidentally got it into your room. Bed bugs hitchhike on luggage, clothing, people, etc.
If there are blood stains or dark/rusty spots on your bed/pillow, there are definitely bed bugs. The bloodstains/spots come from you crushing the bed bugs accidentally. The place where bed bugs are (in this case, your room), may also begin to smell bad. You might also see eggs laid by the bed bugs.
Let me know if you have any other questions. Good luck!
GDP(Gross Domestic Product), GNP(Gross National Product)<span>, the </span>per capita income, the amount of widespread infrastructure and general standard of living, and the level of industrialization are the characteristics of more economically developed nations.