No, it was invented by the Chinese almost 2000 years ago.
no they did not :)
Vikings did not invent cows, which evolved and were then domesticated, rather than being invented by anybody.
they made up 7/11 and Starbucks
a tool to help us for directions
The answer to your question is magnetism.
campass box
Apparently, the Vikings invented ice skating, using pieces of bone as runners.
Hardly. The Vikings flourished about AD 1000. There is solid evidence that early man had organized, regular mammoth hunts thirty to fifty thousand years prior to that.
The Vikings invented a style of ship that was fast and expedient. Their dragon headed sloop style ship was able to carry large troops and travel across open ocean.
If by viking writing, you mean the Futhark, that is lost in history. The Futhark has been around since at least 200 CE, way before the vikings were vikings.
We still use longboats and combs. Also the looms that thy used for weaving
yes they did !! they belived that the god of petagrium fought for tomatoes and in vented ketchub but at the time it was called blue waffle .