Ethiopia is one of the world's oldest nations dating back to 980 BC and one of only two countries in the world to never be colonized by a foreign power. Ethiopia holds spiritual significance to countless people of the world is one of the only nations mentioned in the holy texts of Jewish, Christians, and Muslims and is reported to be the safe haven for the Ark of the Covenant, holding the original tablets of the 10 commandments. As the birthplace of civilization, Ethiopia is the only nation with its own alphabet, calendar, and time system. It is also considered impolite to refuse a cup of coffee as Ethiopia is also the birthplace of espresso.