The personality who challenged the Soviet leader Mikhail Gorbachev to tear down the berlin wall was Ronald Regan
<h3>What is the
Soviet union Nations?</h3>
Generally, From 1922 until 1991, the Soviet Union (USSR), was a Communist state that encompassed most of Eurasia.
In conclusion, This challenge was initiated on June 12, 1987.
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Overall transformation : Ar-H to Ar-R
Named after Friedel and Crafts who discovered the reaction in 1877.
Reagent : normally the alkyl halide (e.g. R-Br or R-Cl) with aluminum trichloride, AlCl3, a Lewis acid catalyst.
The AlCl3 enhances the electrophilicity of the alkyl halide by complexing with the halide.
Electrophilic species : the carbocation (i.e. R +) formed by the "removal" of the halide by the Lewis acid catalyst
The reactive electrophile, the carbocation is prone to rearrangement to a more stable carbocation which will then undergo the alkylation reaction.

Friedel-Crafts reactions are limited to arenes as or more reactive than mono-halobenzenes
Other Lewis acids such as BF3, FeCl3 or ZnCl2 can also be used
Other sources of carbocations can also be used:
from loss of water from alcohols treated with acid such as H2SO4
from the protonation of alkenes by acid such as H2SO4
Alkylation products can also be obtained by the reduction of Friedel-Crafts acylation products
The correct answer to this question is letter "b. a teenager watching his language around his younger brother." The scenario that reflect the value of respecting others is that <span>a teenager watching his language around his younger brother.
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The correct answer to this question is letter "d. all of the above."
It was meant to bring together explorers, to promote exploration and to promote knowledge of it to the public.
Explanation:
South Africa is facing significant income and wealth inequality. The expectation was, after 1994, that something will improve. Only other thing that's different, though, is the oppressor's colour. There are almost as many powerful black people today as there are white folks. This seems to be a positive idea, on the surface of it. The truth isn't so sweet, though. The rich black community is not the impact of international prosperity, but has actually displaced thousands of potential South Africans who may have relocated to several other nations.
