‼️HURRY BRAINLIEST GETS 30 POINTS ‼️Boundaries created between groups of people due to conflicts or peaceful agreements are A natural
B. political
C. physical
D. suggested
Please select the best answer from the choices provided⬆️

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a. a researcher uses the customs office’s passenger lists for ships bringing immigrants to the us between 1820-1845 to track the numbers of immigrants from certain ethnic groups. b. a researcher conducts a linguistic study of comments posted on a local public blog. c. a developmental psychologist videotapes interactions between groups of toddlers and their care givers to determine which intervention methods most effectively manage aggression. d. a researcher asks the director of a local free clinic about the number of patients in the last two years with newly diagnosed hiv/aids.

Globalization and technology developments have led to what some individuals have described as "flat world." what is the significance of the flat world concept? what is the impact of the flat world on supply chain requirements and strategies?

Which of these persons was a co-founder of twitter? eric schmidt jack dorsey tim cook paul alle