Answer:
Gutenberg's moveable type printing press invention
Explanation:
Johann Gensfleisch von Gutenberg in 1450, Mainz, Germany, was the first to assemble and bring together complex systems and subsystems necessary to print a typographic book which was sought by printers in different countries such s Germany, France and the Netherlands. Gutenberg's moveable type, made use of ink made from boiled linseed oil colored with lampblack.
Answer: Leonhard Euler
Explanation: Although Albert Einstein perfected pie, It is widely acknowledged that Leonhard Euler makes it first.
They made federal government too weak.
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The answer is B. It caused economic and social instability by drastically reducing the workforce. the Black Death was caused by rats carrying diseases which in turn got humans and animals sick, and when the people got sick they couldnt work which reduced the workforce.
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