I'm learning about demand in my economics class and we're talking about market demand curve. it says that its a summation of all individual demand curves. i'm just wondering if they're actually talking about individuals (as in a single person) vs the whole world or country? sorry if you can't understand the question this was the best way i could think of phrasing it.

Americans often refer to a country that is not the united states as a

Which of the following is an example of proximodistal pattern of growth? (a) abbey learning to sit first before learning to stand or crawl (b) alex learning to move his eyes before learning his first words (c) colin learning to stare at moving objects before trying to touch them with his hands (d) polly learning to grab the objects with her whole hands before learning to pick them up with her fingers

Which phrase in the preamble of the constitution means the government should provide peace and order in society.