Industry is a key success.

The industry is the key to economic success.

Explanation:

After the Industrial Revolution, which began in the XIX. century, the industry has become the most important economic branch of any state. In the modern world, the most robust economies are based on industrial production. Without a strong industry, there is no healthy state and no economic stability.

in an effort to stem the tide of refugees attempting to leave east berlin, the communist government of east germany begins building the berlin wall to divide east and west berlin. construction of the wall caused a short-term crisis in u.s.-soviet bloc relations, and the wall itself came to symbolize the cold war.

answer would be b, a tariffs main purpose is to protect domestic production and jobs.