D ) Britain and France depended on the South for four fifths off their cotton for the textile industries.
Answer:
topographic map
Explanation:
topographic map is the study of natural features like rivers , lakes and streams and also show the shape and elevation of the earth surface
The correct answer is A. Technological advances such as s<em>team power, air brakes, automatica lubricators and steel tracks</em> have affected the railroads very positively, since it has made it possible that the rail network could become a safer, more efficient and more reliable means of transportation for goods.
In response to the Berlin Blockade the United States began a massive airlift off food,water, and medicine to the citizens of the besieged city. Supplies from American planes sustained over 2 million people in West Berlin.
