Saudi Arabia is the home of two Islam’s holiest cities, Mecca and Medina. It is officially referred to as the Kingdom of Saudi Arabia (KSA) with Riyadh as its capital city. Saudi Arabia is a monarchy and the official language is Arabic. The country is governed through the Islamic law. It is the largest oil producer in the world and tops the list of global oil exporting countries. Its gas reserves rank the sixth in the world and its oil reserves is the second largest in the world. Due to its thriving economy, Saudi Arabia has the largest Human Development Index. Islam is the only religion for Saudi Arabia and its citizens are required to be Muslims. No one be it a citizen or a guest to Saudi Arabia has the freedom of religion. Lunar Islamic calendar is used in Saudi Arabia (Ismail et al., 2016).

            Nigeria is a West African country with Abuja as the capital city. It was colonized by the British and it became an independent nation in 1960. It is headed by a president who is democratically elected by the Nigerian people. Roughly half of Nigeria is occupied by Christians in the south while Muslims occupy the northern part of the country. Its economy is ranked 20^th largest in the world while it has the largest economy in Africa, followed by South Africa. The country has been troubled by Boko Haram insurgents seeking establishment of Sharia law since 2002. English is the official language, although there are more than 500 spoken ethnic languages. Nigeria supplies 11 percent of United States oil imports. Nigeria ranks 12^th largest oil producer globally and 8^th largest oil exporter (Chimobi, 2016).

United States of America consists of 50 states, has a population of about 324 million people, with Washington, D.C as its capital city. The U.S holds the largest economy in the world in terms of human development, productivity per individual and per capital income. America has the most powerful military in the world, and highly influential political and cultural systems in the world. U.S is the largest oil importing country in the world (Epstein & Sonu, 2016).