The endocrine system is a control system of ductless glands that secrete hormones within specific organs. Hormones act as messengers, and are carried by the bloodstream to different cells in the body, which interpret these messages and act on them.he pancreas is unusual among the body's glands in that it also has a very important endocrine function. Small groups of special cells called islet cells throughout the organ make the hormones of insulin and glucagon.
The island of Manhattan was purchased for wampum. Wampum was used as the main form of Native American Money because it had value as a decorative item, and many Native Americans pierced holes at the top of their wampum and wore them in a belt rather than carrying wampum in a bag.
The idea of land exchange, that is, Native Americans would give up their land east of the Mississippi in exchange for a similar amount of territory west of the river, was first proposed by Jefferson in 1803 and was first incorporated into treaties in 1817.he Indian Removal Act of 1830 implemented the U.S. government policy towards the Indian populations, which called for moving Native American tribes living east of the Mississippi River to lands west of the river.