Tungkol kay is quite the term, cheers bro
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:
The Europan countries which were considered to be "behind the Iron Curtain" included: Poland,Estearn Germany, Czechoslovakia, Hungary,Yugoslavia, Romania, Bulgaria, Albania and the Soviet Union. Hope this helps
There is no given name to the person who discovered the parallelogram.