Which of the following could affect the human population?

A deadly virus emerges that can pass from human to human.
A hurricane makes landfall on an uninhabited island.
A nuclear war breaks out between two nations.
Immigration to the United States from China increases.

because he created electricity

very positive impact on our industries in the west, sine they promoted settlement and increased the ways in which goods could be transported to market.  

state law

most seat belt laws in the united states are left to the states. however, the first seat belt law was a federal law.