trade route
To circumvent the costly overland trade which required them to trade with the Muslim world (the Middle East).
Supporters saw Alaska as a foothold into Europe, while detractors were concerned that attacking Europe would prove too costly.
It spread American influence through business.
It spread American influence through business.
It spread American influence through business
The superlative for costly is "most costly" or "costliest."
The combined military forces of NATO would have made that a very costly invasion.
Oil is leaking and burning off due to a gasket failure. Replace it or you're in for a world of costly repairs
It is costly but we can create the brand image in the mind of consumer through test marketing
Yes, costly is an adjective. E.g. It was a costly mistake. (One that was expensive to fix, or that led to other bad consequences.)
Costly.
advantage: through investigation we collect all the information disadvantage: it is very costly