Which country borders Ukraine?

Poland. Back in 1980, Poland had land borders with Soviet Union, Czecho­slo­va­kia and German Demo­crat­ic Re­pub­lic. Today it is neigh­bor­ing Germany, Czech Re­pub­lic, Slo­vaki­a, Ukraine, Belarus, Lithua­nia and Russia.

Between the USA and Mexico. The fence on the US-Mex­i­can border can be adjusted to remain on top of the ever shifting sand dunes. It is a special con­struc­tion of narrow, 15 feet tall el­e­ments, that are movable ver­ti­cal­ly.

China and Pak­istan. K2 is the second highest mountain in the world, after Mount Ever­est,It is on the border between China and Pak­istan. K2 is known as the Savage Mountain due to the extreme dif­fi­cul­ty of ascent. It has the sec­ond-high­est fatality rate among the eight thou­sander­s. With around 300 suc­cess­ful summits and 77 fa­tal­i­ties, about one person dies on the mountain for every four who summit.

Slove­ni­a. Italy borders France, Switzer­land, Austria, Slove­ni­a, San Marino and Vatican City.