Why are the original 13 colonies important?

Which are components pf a political party? why do we need political parties give reason.

What is the difference between an observational study and an​ experiment? choose the correct answer below. a. in an​ experiment, a treatment is applied to part of a population and responses are observed. in an observational​ study, a researcher measures characteristics of interest of a part of a population but does not change existing conditions. b. in an​ experiment, a treatment is applied to an entire population and responses are observed. in an observational​ study, a researcher measures characteristics of interest of an entire population but does not change existing conditions. c. in an​ experiment, a researcher measures characteristics of interest of a part of a population but does not change existing conditions. in an observational​ study, a treatment is applied to part of a population and responses are observed. d. in an​ experiment, a researcher measures characteristics of interest of an entire population but does not change existing conditions. in an observational​ study, a treatment is applied to an entire population and responses are observed.

What is the most likely result of specialization in producing products a and b? a) japan stops producing and using product b. b) the u.s. stops producing and using product a. c) the increased output means the u.s. and japan can trade excess units of products a and b. d) specialization means the u.s. will trade 800,000 units of product b for 60,000 units of product a.