Again,Indians were forced to watch angrily as white settlers began moving onto lands they had agreed to give up.

VOA: special.2010.04.01

Well, if you want to find out you can get onto sec.gov and it will give you the current definition.

想了解的话就到SEC.gov去查查吧,你会找到最新的定义

耶鲁公开课 - 金融市场课程节选