During the seven years war (1756-1763), britain's main ally in europe in its war against france was:

During the seven years war (1756-1763) Britain's main ally in Europe and it's war against France was the Electroate of Hannover and Prussia.

Britain's closest European ally, the Netherlands, stayed away from the war and were able to maintain their neutral position.

The war was the biggest of its scale uptil that time with more than 600,000 killed and being fought in 5 continents around the globe. It is often called World War Zero and by some as the original World war.

greek theater actors are greek

the correct answer is “opportunity cost”. opportunity cost is what a company misses out because it decided in one option over another one. in this case, the company decided to invest in building a factory so it gave up another possible benefit or profit in order to achieve success with the factory.  

trade-off is not the correct answer since it is a situation in which you accept losing something in return for benefits in other areas.

and finally, consequence is a general term used to accept what it comes when you make a decision. it can be a positive or negative consequence depending if the decision you took was the correct one.