History what was the more popular name for the strategic defense initiative?

Star Wars

Explanation:

The president of the United States Reagan Ronald initiated a strategic defense system named the Strategic Defense Initiative (SDI) which is popularly known as Star Wars. The defense system was aimed for an anti-ballistic missile system against the potential threat of a nuclear attack from the other nations, especially the Soviet Union. The defense system was to detect a weapon from the space and for this reason, it was named Star Wars. Another reason for the name was the popular movie Star Wars, to which people could easily relate.

formulating the initial idea for the policy

answer is c.

the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.