Angola and Zambia share a border, so it is theoretically possible to be standing in both countries at once, though we wouldn't recommend it. Luanda to Lusaka is about 1400 miles.
No, they do not share a common boundary.
No
Yes they share a border.
They share a common border.
Adjacent time zones are time zones that share a common boundary, just as adjacent countries share a common border and adjacent apartments share a common wall.
They share a common maritime boundary.
Texas Arizona California & New Mexico as they share the Mexican boundary in common however they also share it in common with half a dozen Mexican states so it should be noted that the question & answer are defective in this regard moreover the question probably does not intend this answer at all but rather appears to refer to a single boundary point known as the four corners which is shared in common by Utah Arizona Colorado & New Mexico so it should also be noted that a boundary & a boundary point are not quite the same thing since a boundary is generally defined & considered as a line rather than only a single point
The neighbouring countries of Zambia are:Democratic Republic of the Congo to the northTanzania to the north-eastMalawi to the eastMozambique, Zimbabwe, Botswana, and Namibia to the southAngola to the West
Not they do not share a boundary, they are on opposite sides of Africa.
Yes. Algeria shares its eastern border with Libya's western border.
Botswana is a landlocked country located in Southern Africa. It is bound by the Republic of South Africa to the south and southeast, Namibia to the west, Zambia to the north and Zimbabwe to the northeast.