One of the great values of reading ancient history is that there is very little that is new under the Sun. Tribalism, nationalism, imperialism, and statism are not new phenomena in human history. Both their dangers and the solution to those dangers were well-known to the people of the past.
When we study their teachings we can recognize the way that the same old propaganda and same old lies have been repackaged by the political elites for our day, to indoctrinate and deceive us into believing in an ideology that serves them while harming us. We can also learn from the ancients how to prevent this cycle from repeating so that we can build a better and freer world.
Here is just such an example.