Answer:
Military communications have to be coded to keep them secret from the enemy. However the process of coding and decoding are time consuming processes. Furthermore the codes may be broken by the enemy. Nations have devoted considerable effort trying to create unbreakable codes. In World War II both Germany and Japan thought they had such unbreakable codes, but in fact these codes were broken and their most vital information were readily available to their enemies.
Explanation:

The three staples of Native American food are corn, squash, and beans. Other foods that have been used widely in Native American culture include greens, Deer meat, berries, pumpkin, squash, and wild rice.
The Native Americans are well revered for being resourceful people, and when it comes to Native American food, there is no difference. They were well versed at using the ingredients that were readily available to them and for making many different foods with them. Corn and various corn products are abundant in Native American food recipes and they have lent many of their earliest delicacies to the American culture as a whole.

During the revolution in religion, the separation of church from state started. It took power away from Church leaders. As people start to think for themselves, they started to demand more power from within the church. Congregation started removing their pastors and influencing their pastors' messages and sermons to the Church. More importantly, there has been a new American concept of freedom as renewed intellectuals started studying religion. People started to question the Anglican Church structure, the head being the King of England, which eventually led to the American Revolution.
Christopher Columbus was the first explorer to sail what are today the Caribbean Islands between North and South America. He sailed for Spain. Hope it help!
The natural feature that divided Spanish territory from British Territory after the French and Indian war was the Appalachian Mountains,after a line was drawn along them to allow for peaceful settlement among both parties.