The term 'Oman Neighbor' is referring to the country of Yemen, which is located in the Middle East and shares a border with Oman. Yemen is a country of over 28 million people and is known for its diverse culture and history. It is also home to some of the world's oldest civilizations, including the Sabaeans, Minaeans, and Himyarites. Yemen is an important trading partner for many countries in the region, and its economy is largely dependent on oil exports.