Like Rome, the United States relied on expansion and plunder to achieve the welfare of its people, so it set out west across the two banks of the Mississippi to the Midwest and from there to the West Coast (located on the eastern banks of the Pacific Ocean) and from there to the conquests in East Asia.
The place of Ukraine in the geopolitical confrontation of Land and Sea has already been written about quite a lot and in some detail. Moreover, it is symbolic that the founder of geopolitics, Halford Mackinder, was the Entente high commissioner for Ukraine during the Civil War in Russia.