What they did before and how china became a civilization
Portugal is the European Kingdom that led in European Exploration in the 15th Century in the age of discovering, exploration and mapping coasts of Africa, Canada, Asia and Africa. Under the leadership of Prince Henry the Navigator, Portugal took the role to search for a sea route to Asia by sailing south around Africa, and during this process, Portugal accumulated wealthy knowledge on the geography and navigation of the Atlantic ocean.
In the last decade, Christopher Columbus crossed the Atlantic Ocean and "discovered" a new continent while searching or a sea route to the Indies.
In 1498, Vasco da Gama led the first fleet around Africa to India.
A.D 476, for a total of 507 years, until taken by the ottoman turks in 1453
A.D 478-1453
C is the correct answer. All of the attempts were failed.
In April 1980, frustrated with the slow pace of diplomacy (and over the objections of several of his advisers), Carter decided to launch a risky military rescue mission known as Operation Eagle Claw. The operation was supposed to send an elite rescue team into the embassy compound. However, a severe desert sandstorm on the day of the mission caused several helicopters to malfunction, including one that veered into a large transport plane during takeoff. Eight American servicemen were killed in the accident, and Operation Eagle Claw was aborted.
President Carter continued to attempt to secure the hostages' release before his presidency's end. On 20 January 1981, minutes after Carter's term ended, the 52 US captives held in Iran were released, ending the 444-day Iran hostage crisis.
