Edinburgh emerged as Scotland's main political center and was declared by James III (1460 1488) to be  the principal burgh of our kingdom. 
Edinburgh emerged as the political center of Scotland and was declared to be the principal burgh of the kingdom.
mnli hypothesis: Edinburgh emerged as the political center of Scotland and was declared to be the principal burgh of the kingdom. premise: Edinburgh emerged as Scotland's main political center and was declared by James III (1460 1488) to be  the principal burgh of our kingdom. 