What is meaning of Ampere as unit of current , and what exactly is a 'unit' of electric current ?

 Some history behind why Ampere is unit of current :

• While it was known that force is imposed -> and subsequent motion between two bodies each having an electric charge,

• Known through columb's law- > Electric force between two static bodies is directly proportional to product of charges and divided by square of distance,

• Which was somehow just like the gravitational law !,

• Marie Ampere observed that -> when electricity is passed between two adjacent wires- > it imposes a force on each other

• If currents are in same direction-> Wires attract each other,

• Unit of current was made in honour of his research,

• Definition of current - A hypothetical case of 2 thin and infinite wires , 1 m apart , 1 Amp is 'current' that generates 2x 10^-7 N of 'force' per 'every m' of wire

• Very small force and strange definition indeed, but this is what is behind the definition !