Underline the conjunction. Then, after each sentence, write coord. if the conjunction is coordinating, corr. if the conjunction is correlative, or sub. if the conjunction is subordinating. A. In America, early colonial mail was neither regular nor organized. B. To correspond with relatives abroad, colonists posted letters with sea captains unless they could find a friend to carry the letters for them. C. Cities supervised early attempts at organized mail so that the demand for communications could be met. D. Since the Colonial American authorities realized the necessity of centralized control, they appointed Benjamin Franklin deputy postmaster general for America in 1737. E. Franklin made fundamental improvements in the domestic mail system while he established regular foreign deliveries.