The unofficial reason for invading the nation, however, was to control their resources.

As a general principle, the heading of the main entry of the book should be in the form in which the book itself is published; that is, if it is published under an autonym let the autonym be given, if under a pseudonym, then let the pseudonym be given, and if the book be anonymous, then let the fact be stated.

… and to show that there was no shortage of steam, Royal Scot, directly we stopped, blew off vigorously from its safety-valves steam that well might have been used in the cylinders in the interest of timekeeping.

Seaman, sea gauge, sea monster, sea horse, sea level, seaworthy, seaport, seaboard, etc.