PLEASE HELP ME ON THIS DO NOT WASTE ANSWERS ILL MARK YOU THE BRAINLIEST

Why are the majority of the world's economies mixed? what may happen to the "pure" types of economies (traditional, socialist/command, market capitalist) when they incorporate elements from other economic models?

The technique of getting a commitment from a potential customer and then changing the terms of the agreement is best described as low-balling. cognitive dissonance. reciprocal concession. the foot-in-the-door technique. a half-dozen high school students are going to a concert. chantal wants to wear a new colorful outfit that she just received as a gift, but she assumes that her five friends will all be wearing nothing but black leather. chantal decides to do likewise, and leaves her colorful outfit in the closet. chantal’s behavior is an example of conformity. resistance. reciprocation wariness. idiosyncrasy credits.

What is donald trump wanting to build and have finished by 2020?