Question 1: * Brexit meaning ?
Cách 1: Brexit stands for an act of leaving by Britain from the European Union (short for "British exit")
Cách 2: Brexit means the withdrawal of the United Kingdom from the European Union, short for “British exit” * British should stay in The EU Union. Here are some main reasons:
1. Jobs
Around 3.5 million British jobs are directly linked to British membership of the European Union’s single market – 1 in 10 British jobs.

2. Exports & investment
The EU buys over 50 percent of UK exports (54 per cent of goods, 40 per cent of services).
Over 300,000 British companies and 74 per cent of British exporters operate in other EU markets.
American and Asian EU firms build factories in Britain because it is in the single market.
3. Trade
The EU negotiates trade agreements with the rest of the world. Outside the EU Britain would have to renegotiate trade deals alone. While the EU is the world’s largest market, a UK outside the EU would not be a high priority for other counties to negotiate a trade deal.
4. Freedom to work and study abroad – and easy travel
1.4 million British people live abroad in the EU. More than 14,500 UK students took part in the European Union’s Erasmus student exchange scheme in 2012-13. Driving licences issued in the UK are valid throughout the EU.
5. Fighting crime
The European Arrest Warrant replaced long extradition procedures and enables the UK to extradite criminals wanted in other EU countries, and bring to justice criminals wanted in the UK who are hiding in other EU countries.
Euro just helps UK authorities work with other EU countries’ to tackle international organised crime such as drug smuggling, people trafficking and money laundering.
6. Influence in the world
The EU is the world's biggest market and plays a big role in world trade, climate change issues, development projects and more.
It has the clout to take on multinationals such as Google and Microsoft. At the moment Britain plays a key role in the EU, and leaving would see us forgo that.

Question 2: What would happen if Scotland became an independent country?
Independence would fully empower the Scottish Parliament and the Scottish government. Scotland would have its own economic, social, health, education, energy, environment, immigration, defence and foreign affairs policies (etc. etc.), at the same time as having control over the necessary finances to enable those policies to be implemented. Scotland would also have its own representation in the European Union, NATO, the Commonwealth and the United Nations.
However, there will definitely be challenges for Scotland. For instances:
A newly independent Scotland would be more vulnerable to economic shocks that arise from circumstances beyond its control, such as if North Sea oil reserves run out sooner than anticipated, or if the price of oil falls. It is of course possible that there's plenty of oil left and its value will remain high, but it's still a risk — and one that Scotland will have greater exposure to as an independent country than as part of the UK.
If Scotland became independent, it would undoubtedly cause a major upheaval to basic financial infrastructure. It would also mean over 18 months of negotiating and creating new financial system frameworks, trading laws, political union memberships, pension rules and so forth. Scotland has £100bn (€125.5bn, $162.7bn) worth of debt but its economy is only worth £150bn. Regardless, borrowing costs would be automatically higher for a newly formed and heavily indebted country. This would affect food prices, loans, mortgages and services

Question 3: The remarkable change in British economy had been the shifting from manufacturing industry into service industry.
Economy of England: The service sector of the economy as a whole is now the largest in England, with manufacturing and primary industries in decline.
Service industries, particularly banking, insurance, and business services, account by far for the largest proportion of GDP and employ around 80% of the working population
Tourism accounted for £96 billion of GDP (8.6% of the economy) in 2009. It employs over 2 million people – around 4% of the working population.
Although manufacturing continues to decline in importance, it still accounts for some 26% of the UK's GDP.
Agriculture is intensive, highly mechanised, and efficient by European standards. It contributes around 2% of GDP
Economy of Scotland: After the Industrial Revolution in Scotland, the Scottish economy concentrated on heavy industry, dominated by the shipbuilding, coal mining and steel industries. However heavy industry declined in the latter part of the 20th century leading to a remarkable shift in the economy of Scotland towards a technology and service sector based economy.
Whisky is probably the best known of Scotland's manufactured products. Exports increased by 87% in the decade to 2012 and were valued at £4.3 billion in 2013, which was 85% of Scotland's food and drink exports. It supports around 10,000 jobs directly and 25,000 indirectly. The financial services industry in the Scottish Economy expanded with a growth rate of over 35% over the period 2000 to 2005. The financial services sector employs around 95,000 people and generates £7bn or 7% of Scotland's GDP
Tourism accounts around 3% of Scotland's economic output. . The tourism economy and tourism related industries support c. 170,000 full-time equivalent jobs mainly in the service sector

Economy of Wales: Wales has a diverse manufacturing sector. Heavy industry, once a mainstay of the Welsh economy, has largely been in decline over the past century but is still very apparent.
In recent years, the service sector in Wales has seen above average growth.
Tourism is important in the country economy. In 2002, nearly 13 million trips of one night or more were made in Wales, generating expenditure of £1.8 billion. In 2014, over 10 million domestic trips of one night or more were made in Wales, generating expenditure of £1.7 billion
In 2003, agriculture contributed £418 million to Welsh GVA
Economy of Northern Ireland: Northern Ireland previously had a traditionally industrial economy, most notably in shipbuilding, rope manufacture and textiles, but most heavy industry has since been replaced by services.
As with all developed economies, services account for the majority of employment and output. Services account for almost 70% of economic output, and 78% of employees
Tourism is an important part of the Northern Irish economy. In 2004, tourism revenue rose 7% to £325m, or over 1% of the local economy, on the back of a rise of 4% in total visits to 2.1 m in the year.Tourism is considered likely to become one of the main growth areas of the economy in the near future, with the continuation of the peace process and the normalisation of the image of Northern Ireland internationally.