The city that is center of Islam is mecca
The correct answer is C) mutual defense of member nations.
Article 5 of the NATO Treaty promise to the mutual defense of member nations
"Restore and maintain the security of the North Atlantic area."—Article 5, NATO Treaty; April 4, 1949.
The North Atlantic Treaty Organization is a key strategic agreement, a military agreement indeed, signed by 30 European and North American countries to protect each other in case of military aggression or intervention.
The headquarters of NATO are located in the European city of Brussels, in Belgium. Among the countries that are part of NATO are the United States, Great Britain, Canada, France, Belgium, and Spain.
As the European conquest of Africa unfolded, Portugal played the role of catalyst rather than leader. Hampered by its small size and weakened by several centuries of European warfare, Portugal was the smallest and poorest of Europe's imperial powers by the end of the 19th century. As a result, it was unable to hold on to everything that it claimed, but by playing off the major powers (England, France and Germany) against each other, Portugal managed to expand the territory that it actually controlled by the end of the "Scramble for Africa."
Germany was forced to pay incredibly sizeable reparations to France and Great Britain. As Hitler came to rise he founded the Nazi Party and outlawed the other party’s and became a dictator.