How to Use "apex" with Example Sentences

1. America today is as unaccustomed to global economic competition as the british were at their apex .
2. The newspaper said he believed he was the victim of a plot to ruin him at the apex of his popularity .
3. The resurgence of russian power in opposition to the united states and the european union reached its apex with the august 2008 war in georgia .
4. The apex of chinese politics is so closed to the world that analysts cannot be sure .
5. Candidates for the nine spots at the apex of chinese power have to go through many challenging appointments , many having assumed governorship of two provinces , each the size of some european countries .