That statement is true.
When making the world map for example, many advancement were made after we received the idea that the Earth is Round.
So both geographical movement expression and ideas are not something that could be separated.
I thought you were asking what comes after 23 );
As far as a threat, North Korea has been seen as such for many years (since WWII), when North Korea sided with Russia. America and its Capitalism were not fond of the Communist party, and so we have really been fighting/being concerned about Russian influence.
Historically North and South Korea have been in conflict many years before America and Russia got involved. When we did though it got worse.
Trump has done very little to resolve this, some would say he is making it worse.
AND as for any current events ask Google!
