If you mean for nuclear power, most countries use enriched uranium, about 5 % U-235, in the form of uranium dioxide. There is also the possibility to use a mixed oxide fuel (MOX) which contains some Pu-239 as well as uranium.
The main countries that border the US are Canada, and Mexico.
The main countries comprising the Axis Powers were Germany, Japan, and Italy. The main countries comprising the Allied Powers were Russia, France, and the UK. They were later joined by the US.
France, Britain and Portugal
Canada, Mexico and Germany
The US and North Vietnam .
The main countries involved in the Cold War were the US and the USSR.
us, england, russia
France Britain
Russia, UK, and US ( even Italy, 2nd W.W., not sure) were the main countries of the allied power.
Germany and Japan.
US vs USSR (Russia)
Algeria trades with many countries. However, their main trading partners include France, Italy, Spain, the US, and Turkey.