<span>The introduction of widespread printing during the Tang Dynasty rapidly spread written knowledge throughout china.
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Answer:
sputnik, Apollo 13 etc.
Explanation:
this is a very general question, the space race was so full of everything.
you have sputnik, which basically started this whole thing.
theen you have the historic Apollo 13 which became a historicc event, and a national phenomenon. next time try to narrow the question down a bit more.
Answer:
The addition of oars and sails gave Viking boats an advantage over all other watercraft of their day in speed, shallow draft, weight, capacity, maneuverability, and seaworthiness. Viking boats were designed to be dragged across long portages as well as to withstand fierce ocean storms.
Explanation:
Answer:
The Holy Roman Empire faced many territorial challenges.
Explanation:
The first challenge was in Italy: the Italian states that were part of the Holy Roman Empire were separated from the German hinterland by the Alps, which imposed a communication barrier that made it very difficult for Emperors to hold control over these lands.
In what is now Germany, there were also territorial issues. The land was divided among countless states: duchies, counties, princedoms, fiefdoms, city-states, and so on, something that made coordination at the imperial level very difficult.
As centuries passed, the Holy Roman Empire lost control over several possessions: it lost most of the Low Countries, and the Italian city-states like the Duchy of Milan and the Republic of Venice became fully independent.
