Germany restricted its submarine warfare in response to international outage.
B. Harmed because they brought deadly diseases
As I recall it was rolled-steel girders riveted together, probably from shipbuilding, together with steam-powered winches and an abundance of cheap steel. As opposed to European cathedrals erected with animal-powered winches and with more expensive forged iron bracing (one of the big cathedrals has a kind or iron corset to keep the walls from bursting outwards).
Answer: D
Explanation: The United States, South Korea, the Philippines, Australia, Thailand and other anti-communist allies all helped South Vietnam during the Vietnam War. I would choose the U.S. for this question though.
