Its purpose was to generate revenue for the federal government (to run the government and to pay the interest on its debt), and also to act as a protective barrier around newly starting domestic industries. An import tax set by tariff rates was collected by treasury agents before goods could be unloaded at U.S. ports.
Wen TI was an emperor of the Sui dynasty and also founded it.
The reason why no–one really knows why he was killed is that there is no agreement about who was behind the murder, who pulled the trigger or triggers, or even how many triggers were pulled. And the reason why there is no agreement about many of the basic facts of the JFK assassination is that the case was never seriously investigated.
