Answer:
Replacing the stop signs at Walnut and Birch Streets with roundabouts is the best choice. Roundabouts cost less than traffic signals and cost less money to keep up. Intersections with roundabouts have fewer accidents than those with signals or stop signs.
Answer:
Each other, and managing Europe
Explanation:
After WW2 the relationship between the USSR and the US completely broke down, and the UK allied itself with the US. These nations also sought to prevent another world war in Europe. They divided Germany between East and West, and the USSR took control of many other nations, such as Poland.