Problem: Philip II was a strong and expansionist king and he took every opportunity to expand Macedonian territory. In 352 BC he annexed Thessaly and Magnesia. In 338 BC, Philip defeated a combined Theban and Athenian army at the Battle of Chaeronea after a decade of desultory conflict. In the aftermath, Philip formed the League of Corinth, effectively bringing the majority of Greece under his direct sway. He was elected Hegemon of the league, and a campaign against the Achaemenid Empire of Persia was planned. However, while this campaign was in its early stages, he was assassinated.
Who annexed Thessaly and Magnesia?
The answer is the following: Philip II

Problem: Hitler's interest in this strategy forced Goring and Jeschonnek to review the air war against Britain in January 1941. This led to Goring and Jeschonnek agreeing to Hitler's Directive 23, Directions for operations against the British War Economy, which was published on 6 February 1941 and gave aerial interdiction of British imports by sea top priority. This strategy had been recognised before the war, but Operation Eagle Attack and the following Battle of Britain had got in the way of striking at Britain's sea communications and diverted German air strength to the campaign against the RAF and its supporting structures. The OKL had always regarded the interdiction of sea communications of less importance than bombing land-based aircraft industries.
What prevented the targeting of sea communications before?
The answer is the following: Operation Eagle Attack and the following Battle of Britain

Problem: Terms such as "long-play" (LP) and "extended-play" (EP) describe multi-track records that play much longer than the single-item-per-side records, which typically do not go much past four minutes per side. An LP can play for up to 30 minutes per side, though most played for about 22 minutes per side, bringing the total playing time of a typical LP recording to about forty-five minutes. Many pre-1952 LPs, however, played for about 15 minutes per side. The 7-inch 45 rpm format normally contains one item per side but a 7-inch EP could achieve recording times of 10 to 15 minutes at the expense of attenuating and compressing the sound to reduce the width required by the groove. EP discs were generally used to make available tracks not on singles including tracks on LPs albums in a smaller, less expensive format for those who had only 45 rpm players. The large center hole on 7-inch 45 rpm records allows for easier handling by jukebox mechanisms. The term "album", originally used to mean a "book" with liner notes, holding several 78 rpm records each in its own "page" or sleeve, no longer has any relation to the physical format: a single LP record, or nowadays more typically a compact disc.
What is a typical max playing time of an LP?
The answer is the following: forty-five minutes

Problem: In the diffuse-porous woods, the demarcation between rings is not always so clear and in some cases is almost (if not entirely) invisible to the unaided eye. Conversely, when there is a clear demarcation there may not be a noticeable difference in structure within the growth ring.
In diffuse-porous woods, if the demarcation between rings is obvious, what type of difference within the ring might not be?
The answer is the following:
structure