D. the United Kingdom. started the concept of a parliamentary democracy.
<span>The answer is C, the volcano. Primary succession is one of two kinds of natural and biological progression of vegetation, happening in a situation in which new substrate without vegetation and different living beings normally inadequate with regards to soil, for example, a magma stream or region left from withdrew ice sheet, is deposited. </span>
Transylvania is a region in Romania.
It's a region with some features that make it very distinct from other parts of Romania: for example, it has a very sizable Hungarian and German minority.
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