The best option from the list would be that "<span>A. Access to rivers and railroads was needed to get manufactured goods to markets," since the factories tended to be very far away from major consumer cities. </span>
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 main reason why the US Senate is often called “the greatest deliberative body in the world" is because it allows each state to have an equal say in legislation regardless of the state's size, which is a powerful function.
The correct answer is - pull factors.
The increased freedom and much more employment opportunities in the United States can be considered as pull factors. They can be considered as pull factors because they are big reasons why people from all around the world got attracted to the idea of migrating to the United States, as they saw a nice chance to prosper and have a better life. Most of the countries were still struggling with the freedom issues, and the employment opportunities were either very limited, or badly payed, so no wonder that pople wanted to move in the United States.