A difference between a confederal system and a national system is that:

a. Confederal systems sometimes cover very large territories.
b. National systems involve people of the same ethnicity and religion.
c. Confederal systems centralize power in a single government that may not be characterized by majority rule.
d. National systems have less decentralization of power than confederal systems.

This refers to weather and atmospheric conditions measured over a long period of time.

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.

Based on this map, what can be concluded about the inca empire? (4 points) it was in a highlands region. it was in a mountainous region. it was in the amazon basin. it was in north america.