The two example of Supersonic aircraft are Concorde
developed by UK and France which travelled from NY and London exceeding Mach
(the speed of sound). It was retired following a bad accident. The most famous
supersonic plane is the SR-71 Blackbird spy plane developed by Lockheed. A
supersonic airplane is simply one that is capable of flying faster than the
speed of sound, which is about 760 miles per hour.
The correct answer to this open question is the following.
According to what I already know about global temperature trends, the trends that I expect to see as I plot how temperatures have changed over time is that it is going to increase probably a little more in the coming years before it starts a period of cooling on the surface of planet earth.
Ye, although it could sound strange at this moment, some Eastern European scientists have announced the coming of a "mini-ice age" in the next 40 or 50 years.
My source of prior knowledge that I consider reliable is the Russian Academy of Sciences. More specifically, the Pulkovo Observatory belongs to the Research Laboratory in St. Petersburg, Russia.
I am referring specifically to the research results published by Dr. Habibullo Abdussamatov, who is the Head of the Space Laboratory for the Russian Agency.
Greece, or specificaly athens
One big change in the global economy after World War II, as compared to before the war, was a pattern of steady growth. From 1950 to 1973, the average annual GDP growth of market economies in the developed world averaged around 5% and remained rather steady. This was a strong improvement over the convulsions of the Depression that had happened prior to the Second World War.
Also over the decades after the World Wars, the global economy became more interconnected than ever before as well. Granted, during the Cold War years there was a wall (or shall we say an iron curtain) between the connected economies of the democratic countries and the connected economies of the Soviet bloc of nations. But eventually the communist system would collapse, and the increasing globalization of economies would continue and accelerate into the 21st century.
As nations like the United States have shifted more and more toward service economies rather than manufacturing economies, developing nations of the world have advanced strongly in the global economy through industrialization and growth of industrial production. So now there are new economic powerhouses in the world, such as India and China, which played a much smaller role in the global economy a century ago.
