1 The portion of the brain that maintains the bodyâs internal balance (homeostasis). 2  The hypothalamus is the link between the endocrine and nervous systems. 3  The hypothalamus produces releasing and inhibiting hormones, which stop and start the production of other hormones throughout the body.
In the mid-19th century the Industrial Revolution began to change Spain. The first railway in Spain was built in 1848 and by the 1860s railways had spread across Spain. Mining and the iron and steel industries in Spain grew in the late 19th century.
Spanish Colonization In Mexico. The Spanish colonization in America started with Columbus in 1492. They conquered most of south America, western part of north America, Caribbean, and Mexico. Spain defeated Aztec Empire. They organized their colonies in Mexico, and became a largest empire at that time.