Answer A ::::Due to Global Warming,its getting more difficult to do farming in Australia.That is why number of farms and number of farmers has decreased over the years.Second reason for decrease of farmers is more machines being used farming .
Answer B ::::(1) global warming
(2 ) mechanisation/more machines
Answer C :::::Benefit : modern farming technique and equipments reduces the need of extra labors which was required earlier.
Disadvantage ::Australia does not Genetically Modified (GM) crops import from any country.Excessive use of chemicals by the use of machines has decreased fertility of the Australian soil.
The attacks of the Goths began in 247 A.D. and in 251 A.D. They lured the Roman army under the command of the Emperor Decius into a swampy region and defeated it. ... withdrew Roman troops from Dacia leaving it to the Goths. The Danube once again became the northern frontier of the Roman Empire in eastern Europe.
Answer:
But the neutral USA entered World War II only after many months of argument in Congress and among the general public, and only when a Japanese fleet launched a big surprise air raid against its Pacific naval base at Pearl Harbor in Hawaii on 7 December 1941.
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