Federations often have special procedures for amendment of the federal constitution. As well as reflecting the federal structure of the state this may guarantee that the self-governing status of the component states cannot be abolished without their consent. An amendment to the constitution of the United States must be ratified by three-quarters of either the state legislatures, or of constitutional conventions specially elected in each of the states, before it can come into effect. In referendums to amend the constitutions of Australia and Switzerland it is required that a proposal be endorsed not just by an overall majority of the electorate in the nation as a whole, but also by separate majorities in each of a majority of the states or cantons. In Australia, this latter requirement is known as a double majority.
What does federations have for amendments of the constitution? 
special procedures

The island would serve Britain as a key military base for its colonial routes. By 1906, when the Famagusta harbour was completed, Cyprus was a strategic naval outpost overlooking the Suez Canal, the crucial main route to India which was then Britain's most important overseas possession. Following the outbreak of the First World War and the decision of the Ottoman Empire to join the war on the side of the Central Powers, on 5 November 1914 the British Empire formally annexed Cyprus and declared the Ottoman Khedivate of Egypt and Sudan a Sultanate and British protectorate.
What years was the Famagusta harbour completed?
1906

Since June 2009 VidZone has offered a free music video streaming service in Europe, Australia and New Zealand. In October 2009, Sony Computer Entertainment and Netflix announced that the Netflix streaming service would also be available on PlayStation 3 in the United States. A paid Netflix subscription was required for the service. The service became available in November 2009. Initially users had to use a free Blu-ray disc to access the service; however, in October 2010 the requirement to use a disc to gain access was removed.
What year did the announcement come about Netflix becoming available on PS3 in the U.S.?
2009