<span>The correct answer is letter D. The European unification aimed to create a common, multicultural society. </span>
Answer: Sea-floor spreading — In the early 1960s, Princeton geologist Harry Hess proposed the hypothesis of sea-floor spreading, in which basaltic magma from the mantle rises to create new ocean floor at mid-ocean ridges. ... A test of the hypothesis of sea-floor spreading was provided by studies of the Earth's magnetism.
This would be an example of (Europe and also Asia) as they would be at the boarder of the black sea, and also I believe an other sea.
Following a unified approach, an objective criterion has been developed for the determination of yearwise onset and withdrawal dates of the summer monsoon over the 19 subregions across India. In total 14 meteorological parameters are considered in the development of the objective criteria, two of which represent heating over south Asia-Middle East sector and Tibet-Himalaya-Karakoram-Hindukush Highlands (THIKHIHILS), two intensity of the general atmospheric circulation (GAC) over eastern hemisphere, three intensity of regional circulations and seven local hydro-meteorological conditions.
The economies of the United States and Canada have had a very similar development over their recent history.
Both started by being places where the agriculture and fur trade were the basis of the economy, so they were in general engaged into the primary economic sector.
Once the industrialization was introduced, the countries very quickly switched to the secondary economic sector by becoming heavily industrialized and instead of selling raw materials and products, they were manufacturing them.
As they were becoming more developed and wealthier, they had a big advantage over most of the countries in the world, so they were able to start to engage in the tertiary and quaternary economic sectors, which have became the leading economic sectors in the modern times.