Most countries demonstrate substantial increases in average iq scores over the past century. this phenomenon is called the

The Flynn Effects

Explanation:

Researcher uncovered the interesting facts that an IQ range is increased over time because the younger generation is more intelligent and smart than the older generation. It increased by 10%. now the people are smarter than the past due to smart technologies and improvement in the education field. Computer, Net is more forcibly increased the abstract thinking of people. Now people think abstractly and work smartly.

there are indirect ways of affecting state laws   by with holding funding's. and that's why we have a 55mph speed on the high way with a design of 70mph speed.