Why is the 16th amendment significant?

The 16th Amendment to the United States Constitution states:

"The Congress shall have the power to lay and collect taxes on incomes, from whatever source derived, without apportionment among the several States, and without regard to any census or enumeration."

This was a significant change because it altered the way the government obtained most of its revenue. The change meant that instead of using tariffs as the main source of revenue, the government could rely on income taxes. The change was particularly accepted in the South and the West, where tariffs made life expensive.

it was a act of seld fesnse more over it was a peace treaty between the fogein contunries.

which time period is this? or is this story fictional, i'm going to need more info to answer this question