Answer:
Passage tombs are tombs made in the Neolithic period and are mostly found in Ireland, but usually in the north of the island. These burials are typically tended to contain grave goods like pieces of quartz, Carrowkeel ware, chalk balls, etc. Many passage tombs have been professionally excavated, but there are also still many that remain untouched for centuries, waiting to be discovered.
It was Diocletian, roman emporer.
Perestroika refers to ECONOMIC kind of Soviet reforms.
It originally referred to increased automation and labor efficiency. This practice of restructuring the economic system resulted to greater awareness of economic markets putting an end to central planning.
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