if you mean which countries have borders that are entirely made up of straight lines like say the state of Utah then none
but if you mean which countries have borders that include at least some lines that are entirely or perfectly straight then probably all or nearly all
A few examples like Papua New Guinea and Egypt do however come close to entirely straight borders
Land borders are defined by border markers. These are placed by mutual agreement by the two countries and mark out the border. They can be anything from a few tens of metres apart to a few Km apart. Normally they are within sight of each other. The border is deemed to run in a straight line from on border marker to another.
Most borders are therefore a large number of relatively short straight lines, and most borders are defined by straight lines.
This does not apply to borders which run along rivers or lakes. in this case the border is normally the centre of the river, which is not a straight line.
Note a line of latitude (xx °N or yy °S) is not a straight line.
No countries border Utah, it is entirely within the USA
A landlocked country is a country which has no sea borders, or is bordered entirely by other countries - the country's borders are "locked" in by the land surrounding it.
Israel is entirely within Asia and all of its borders are with other Asian countries or territories.
Brazil borders 10 countries and Russia borders 13 countries.
so that it is easy to identify their land as it creates disputes.for eg border between Libya and eygpt is not straight hence it is a major issue for fight
One example of a landlocked country entirely contained within another country is Lesotho, which is entirely surrounded by South Africa. Its territory is landlocked within South Africa's borders.
Four states in the United States have straight line borders: Colorado, Wyoming, Utah, and New Mexico. These straight line borders were established through surveying techniques rather than natural geographical features.
Which two states have four straight lines as borders
Australia shares no land border with any other country. It is surrounded entirely by oceans and seas.
Countries that share borders with other countries are referred to as "landlocked countries." Examples include Germany, which shares borders with nine countries in Europe, and Brazil, which shares borders with ten countries in South America.
it borders 3 countries- France, Belgium, and Germany
Every country has borders.