The free rider problem<span> is a market failure that occurs when people take advantage of being able to use a common resource, or collective good, without paying for it, as is the case when citizens of a country utilize public goods without paying their fair share in taxes.</span>
This wall helped a little keep small invaders out because it provided a wall that was difficult to get over. But it wasn’t good enough to stop big invasions because a large amount of people would overwhelm the guards.
It offered women the opportunity to work outside the home. (APEX)
The United States of America
