To the Romans, the Gulf of Thailand was the eastern edge of the world. What lay beyond was entirely unknown - maybe an endless vastness of ocean, or possibly lands filled with monsters and treasure, unreachable with their current naval technology.
The Roman Ides of March is the day that falls on March the 15th.
After the new world was discovered, European political configurations were reeling from the effects of all the gold and silver coming in from the Spanish Main. The English had to scramble for some balancing solution to counter the vast wealth flooding into the mainland rivals.