What does this timeline show about the role of the Supreme Court in defining limits on free speech?

Supreme Court declared that the government could restrict speech more in times of war than in times of peace.

Explanation:

During war times, every form of freedom of speech and civil liberties do suffer greatly. This is because, the government would not want speeches to go against them and aggravate issues during war. This was put in place by Justice Oliver Wendell Holmes of the Supreme Court, during the Schenck v. United States  case of 1919. The arrangement has been consistent in the history of the country, starting from the revolutionary war and when the US gained independent from Britain.

in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.

the answer is chorales.