Islam and the Nation "of Islam" are two different religions. Islam is a religion for all races and enjoins the worship of the One Unseen God who never took human form. On the other hand "the Nation" is a movement geared towards non-whites that teaches God appeared as a man named Fard Muhammad and that Elijah Muhammad was a prophet. According to orthodox Islam these are blasphemous beliefs that contradict the basic theology defined throughout the Qur'an and other authentic texts. The followers of "the Nation" adhere to some Islamic principles that are mixed with other practices and beliefs completely alien to authentic Islamic teachings. To better understand the differences read about Malcolm X, his pilgrimage to Mecca and his subsequent comments to the media. Islam teaches equality amongst the races (Qur'an 49:13).
All Muslims are not Arab, Middle-Eastern or of African descent. Islam is a universal religion and way of life that includes followers from all races. There are Muslims in and from virtually every country in the world. Arabs only constitute about 20% of Muslims worldwide. The countries with the largest Muslim populations are not located in the Middle East. They are Indonesia (over 200 million Muslims) and Pakistan and India (over 350 million Muslims combined).
In the five daily prayers Muslims face the Kaaba in Mecca, Saudi Arabia. It is a cube-shaped stone structure that was built by Prophet Abraham and his son Ishmael on the same foundations where Prophet Adam is believed to have built a sanctuary for the worship of the One God. Muslims do not worship the Kaaba. It serves as a focal point for Muslims around the world, unifying them in worship and symbolizing their common belief, spiritual focus and direction. Interestingly the inside of the Kaaba is empty.
The hajj is an annual pilgrimage to the Kaaba made by about 3 million Muslims from all corners of the Earth. It is performed to fulfill one of the pillars of Islam. The rituals of hajj commemorate the struggles of Abraham, his wife Hagar and their son Ishmael in surrendering their wills to God.