Here are the answers to your questions:
Question 1: Which of these was NOT a major economic problem faced by countries immediately after World War I?
Answer: C - tight economic regulation.
(Note: After World War I, many countries faced issues such as devaluation of currency, industrial and agricultural overproduction, but tight economic regulation was not one of the major problems.)
Question 2: “Socialism in One Country” was a policy that helped which country avoid the worst of the Great Depression?
Answer: D - Soviet Union.
(This policy, adopted by Joseph Stalin, aimed to build socialism in the Soviet Union, which helped it to avoid the worst impacts of the Great Depression that affected many capitalist countries.)
Question 3: “Welfare Capitalism” programs was the way __________ attempted to get out of the Depression.
Answer: B - Great Britain.
(Welfare capitalism refers to a system in which companies provide welfare services to their employees, and Great Britain implemented various welfare programs during the Great Depression as part of its efforts to recover.)
Feel free to ask if you have any more questions!