The main impetus for change throughout has been international obligation, that is, response to foreign, rather than domestic, pressure.

Sure, the main impetus for the trade was saving money.

King Albert's interest in the military use of airplanes was a main impetus for its formation.

The main impetus for merger was the growing failure of many strikes.

The main impetus behind this performance has been the improving world economy.

The growth of the industrial park became the main impetus for the area's population growth from then to the present.

They are shared by the three institutions which derive their main impetus for action from them.

That was the main impetus for my getting involved, because I saw on the national level there was real change.

But the main impetus for future growth, he says, will come from geographical spread and internal expansion.

The effects of possible inflation should provide the main impetus for any proposed reform.