Answer:
Dendrochronologists study tree rings to learn about past climates. Trees in temperate areas form one growth ring per year. Scientists can look at the rings and identify climate conditions during each year of the tree’s life. Scientists found long droughts in both the twelfth and thirteenth centuries. This is the same period when the Anasazi were leaving Chaco Canyon. Under normal conditions it was hard to support their villages in the harsh environment of northern New Mexico. When years of drought occurred, the densely populated Anasazi pueblos could no longer raise enough food. Other forces could have pushed the Anasazi away from Chaco as well.
Explanation:
The goal of the temperance movement was to "<span>C. outlaw the drinking of alcohol," in the United States, since many people saw alcohol consumption as being detrimental to society. </span>
Answer: It helped create unity and a money economy, and facilitated the spread of ideas and culture.
Trade was an important economic activity in the Islamic world. Islamic merchants traded with faraway places like China, Africa and Europe. Their trade goods consisted of sugar, salt, textiles, spices, slaves, gold and horses.
Their routes followed both land (such as the Silk Road) and sea, and it passed through cities such as Mecca, Medina, Constantinople, Baghdad, Morocco, Cairo and Cordoba.
The expanse of trade contributed to the spread of Islam and Arabic culture.
