The earlyest weapon we know about would be the wooden spear.
Impossible to tell. The weapon was LIKELY a smoothbore matchlock type weapon, since they were among the earliest form of firearms that could be used for hunting.
Probably clubs. See the beginning of the movie 2001 A Space Oddessy - says it all.
The earliest "musket" was seen in warfare in the 1500s, as a support weapon for pike regiments. However the earliest form of hand-held firearm was the hand-cannon, created in 13th century China. You're spelling/grammar is absolutely atrocious.
No. The earliest surviving yo-yo dates to 500 BC, made using http://www.answers.com/topic/terra-cotta disks. A Greek vase from this period shows a boy playing yo-yo. Not a weapon.
One of the earliest recording of pikes being used was during the Sumerian wars. King Eannatum's army from Lagash was depicted as fighting with them in ancient artworks from the period.
The Greek Fire was a weapon used by the East Roman or Byzantine Empire. It was used in naval battles as it could continue burning while floating on water.
Earliest is an adjective.
weapon+poison
Yes. But earliest is also an adjective, the superlative of early (most early). adjective - the earliest time adverb - he arrived earliest
Raster.
Earliest, it is spelled correctly.
A tank is a weapon. A tomahawk is a weapon.