Answer:
d. Soviet Union dissolved, ending the Cold War
Explanation:
The head of the USSR at the moment Mikael Gorbachov decided that the time had come for a series of Reforms and major changes in the structures of the economic and political bodies.
By approaching the West he formalized the dissolution of the Soviet Union. The Russian and Americans began to seek cooperation in a series of topics that would pose a new agenda.
No longer could Cold war politics prevail.
Especially, the threat of terrorism that both sides suffered, made strong efforts into defining a new policy sometimes reflected in bilateral agreements.
With the collapse of the Soviet Union started in the late 1980 countries in the periphery of Russia began to approach US bilateral cooperation as well.
The resulting 15 independent states after 1991 meant also an effort to demilitarize the region. The case was most clear in Ukraine that gave up all the nuclear warheads to Russia.
Answer:
A. Reduced colonists' need for protec
tion against the French in Canada.
in the course of fish evolution, two of the gill slits slowly advanced into the jaws.
The evolution of fish started about 530 million years in the past at some point during the Cambrian explosion. It become during this time that the early chordates advanced the cranium and the vertebral column, main to the first craniates and vertebrates. the first fish lineages belong to the Agnatha or jawless fish.
The earliest fish, corresponding to living hagfish, developed about 550 million years in the past. Diversifications that in the end advanced in fish include an entire vertebral column, jaws, and an endoskeleton manufactured from bones in preference to cartilage. Fish live in the course of the sea and in freshwater lakes and streams.
New studies have uncovered the genetic foundation of gill covers in fish, which came about over 430 million years ago. It sheds light on one of the most essential evolutionary traits for fish, in addition to over vertebrates.
In jawless fishes, a sequence of gills opened behind the mouth, and those gills became supported by way of cartilaginous elements. the primary set of these elements surrounded the mouth to shape the jaw.
Learn more about the evolutions of fishes here: brainly.com/question/1426050
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President Ronald Reagan rejected the theory of Keynesian economics, this theory proposed by John Maynard Keynes, embodied in his work General Theory of Employment, Interest and Money, published in 1936 in response to the Great Depression of 1929, the central principle of this school of thought is that state intervention can stabilize the economy, Keynesianism is one of the best-known economic theories, its main characteristic is that it supports interventionism as the best way out of a crisis and as a mechanism to stimulate demand and regulate the economy in times of depression.
