Tight Feeling in Throat. A tight feeling in your throat can be very uncomfortable. This can also be an alarming sensation if you are unsure what is causing it. Different causes can cause a tight feeling in the throat to appear intermittently or constantly.
The origins of civilization can be traced to a group of people living in southern Mesopotamia called the Sumerians. By c.3500 BCE, the Sumerians had developed many of the features that characterized subsequent civilizations.
Civilizations first appeared in Mesopotamia, in what is now Iraq, then in Egypt. Civilizations thrived in the Indus Valley by 2500 BCE, in China by 1500 BCE and in Central America, what is now Mexico, by 1200 BCE. Civilizations developed on every continent except Antarctica. Characteristics of Civilization