Answer:
Participation was far from open to all residents, but was instead limited to adult, male citizens (i.e., not a foreign resident, regardless of how many generations of the family had lived in the city, nor a slave, nor a woman), who "were probably no more than 30 percent of the total adult population".
Work means to work for a job and work hard around the house snd work hard to get what you want to achieve and sell services means to sell things
The song itself was about the tough conditions on the railroad. However, it is structured in short stanzas such as a ballad would be. The answer is ballad
The pass at Thermopylae was thus opened to the Persian army, according to Herodotus, at the cost to the Persians of up to 20,000 fatalities.