Thomas Edison invented the light bulb. (B)
A decision typically has costs/benefits.the oportunity benefit is what you gain from taking an opportunity
It greatly changed the view of the Vietnam War back in America. People already didn't want U.S boots down on Vietnam, but the My Lai massacre made the U.S People really change views and turn on the war. This also affected the government, which then affected how the U.S commanders dictated the war.
There haven't always been nine justices on the court. The U.S. Constitution established the Supreme Court but left it to Congress to decide how many justices should make up the court. The Judiciary Act of 1789 set the number at six: a chief justice and five associate justices.
