Up to early 2019, Britain will remain a full European Union member and nothing will change beyond the exclusion of its representatives from some European Union meetings where the approach of the remaining 27 to Brexit is discussed.
Prime minister Theresa May has said she wants to leave the European single market in order to be able to control immigration.
Tusk has said that that once European Union officials get Britain's notification, they will respond within 48 hours, offering draft negotiating guidelines for the 27 remaining member states to consider.
There's also likely to be friction over Britain's desire to maintain free trade in goods and services with the bloc, without accepting the EU's core principle of free movement of workers.
Arsene Wenger: Arsenal boss' agent might be discussing move elsewhere - Paul Merson
But Wenger isn't saying whether his reign will be extended into a 22nd season, or even if Arsenal wants him to stay. Unlike Albion, who have now equalled last season's points' total of 43, Arsenal had no one with that same desire.
Britain's Brexit minister David Davis said in a statement that Britons had approved a "historic decision" to leave the European Union after four decades of membership.
The launch of the Article 50 means the starting of a two-year Brexit talks between London and Brussels on a deal to determine Britain's future relationship with the remaining 27 member states of the EU.
After months of waiting, it feels like we are in the slightly odd period just before the business end of Brexit gets underway.
Dr Muscat told parliament that in his recent meeting with Mrs May in London, he emphasised that no new agreement would be better for the United Kingdom than that now in place with Britain as a full member of the union.
As the Prime Minister visited the country this morning ahead of triggering Article 50, Ms Wood told the BBC that "all options should be on the table".
Yogi Adityanath as UP CM: Two slaughterhouses sealed in Allahabad
The slaughter houses were sealed by Uttar Pradesh's Allahabad sealed by Nagar Nigam authorities, ANI reported. Reports suggested that there are about 130 legal slaughterhouses in the state employing over two lakh people.
The Supreme Court ruled in January that May's government must obtain approval from the British parliament to trigger Article 50, prompting the introduction of emergency legislation.
A UK Government spokesperson said: "The UK has not yet invoked Article 50".
The report anticipates the new bills will be in addition to the Great Repeal Bill, which will scrap the 1972 European Communities Act that paved the way for the United Kingdom to enter the then-European Economic Community, ending the legal authority of EU law.
Actual negotiations might not start until June, they added.
Tusk reiterated on Monday that he would send governments a draft of Brexit negotiating guidelines within 48 hours of May's letter, which will set out Britain's demands for the talks.
EU summit '4 to 6 weeks' after Brexit trigger: European source
If Scotland votes for independence, expect more years to negotiate its split from London and possible re-entry to the EU. This week we asked again and found respondents were still on board with the Prime Minister's position on Brexit.
The Scotland head of state is demanding a second referendum on Scottish independence before the terms of Brexit are signed. Ireland's interests are best served by a smooth negotiating process, a transitional deal for trade after 2019 - before a final agreement is reached - and a final deal which allows trade to continue as freely as possible in the long term.
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