True the tet offensive was very successful against the south vietnam army
The correct answer should be Police should not be allowed to torture suspects until they confess.
Every year there are hundreds of people who are coerced into admitting to a crime that they did not commit due to the fact that the police believes that they had committed the crime, even though there's not enough evidence. The fifth amendment protects the people from this.
Because of imperialism, countries now had access to colonies. When the war started, they were able to equip their colonies to fight for their side. This led to higher tensions and increased involvement in the war.