What was the purpose of EFTA (European Free Trade Association)?
Options: To remove all tariffs on trade of industrial goods between the member countries, To aid the creation of a single west European market to help boost world trade, both (a) and (b), None of the above
Options: It is a social and religious movement form about AD 500 to 1600, It is the movement that influenced the developed of regional language because it emphasised people's everyday speech, both (a) and (b), None of the above
The initial increase of magnetic field in magnetic storms is caused
Options: when the shock wave, associated with the gusty solar wind, compresses the magnetosphere, when there is a large decrease in field intensity, when the gust wind itself engulfs the magnetosphere, None of the above