what is the trial of tears?

泪痕是什么？
BTW 楼主是要翻译还是什么？

what is the trial of tears?
什么是眼泪的试验?
trial of tears-眼泪的试验

sadness expression

In 1838 and 1839, as part of Andrew Jackson's Indian removal policy, the Cherokee nation was forced to give up its lands east of the Mississippi River and to migrate to an area in present-day Oklahoma. The Cherokee people called this journey the "Trail of Tears," because of its devastating effects. The migrants faced hunger, disease, and exhaustion on the forced march. Over 4,000 out of 15,000 of the Cherokees died.