The best option regarding the Hellenistic period would be that "<span>The period was marked by the blending of Greek culture with ideas from Persia, Egypt, and Central Asia," since this was a time of significant growth in both the arts and sciences in the Mediterranean region. </span>
WW2 set the economy into a big progression era after the the Great Drepression. Companies were hiring worker and producing goods to support the soldiers. When the soldiers returned from war, the women left the factories and started families. This opened jobs for the returning soldiers and launched a big population boom “the baby boom” which ultimately resulted in more consumerism.
The House of Representatives is led by the Speaker of the House while the Senate is led by either the Majority Leader or the Vice President.
Reaganomics, Beirut, Russia (I'd argue that through détente and the arms control negotiations, this was achieved), Surgeon-General, Reagan, I'd say true - it's highly debatable, and communism continued for a few more years after its downfall, but ultimately it was the end of the system, and Saudi oil fields.
A. A government and its citizens