The most important part of the story called Coolies is when the brothers worked hard all day long. It is important because they earned money so their family could survive.Most of Chinese people went to America because they disagreed with the Chinese government and there was rebellions. This made them poor. This part of the story where workers were building the railway shows that the work wasn’t easy for them. They had to hold a sledgehammer all day and they didn’t get paid much. It was also unsafe because they lived in drafty tents, they had to put dynamite in the mountain, and in the winter they wore the same things as summer. This is why the most important part of the story is when brothers worked hard.