Overall the steel plow replaced the wooden plow, steel being alot stronger material than wood but it was unable to be shaped into a plow bottom until the 1800s.
It means a tower. Hope it helped you.
The French word lever means to raise in English.The English word lever means levier in French.
The root word Ergo means work.
A transistor is a solid state electronic device that replaced vacuum tubes for most uses.
Infertile is the word that means unable to have children.
"Illiterate" means unable to read or write.
Being unable to be happy means being Miserable
A person who can not or will not speak is known as a 'mute'
Sad
Unable
undoubtedly
HELLO!
Yes, it is. It means unable to be replaced, and therefore valued.
Inexplicable
Inimitable!
The word you are looking for is "mute."