The figure shows estimated totals of nuclear weapons inventory for the United States and the former Soviet Union (and its successor states) from 1945 to 2019.

(a) On what intervals were the total inventories of both countries increasing?
(b) On what intervals were the total inventories of both countries decreasing?

Transcribed Image Text:

50,000 45,000 40,000 35,000- 30,000- 25,000 20,000- 15,000+ 10,000 5,000 1945 55 65 '65 Soviet/Russian Total Inventory: 75 75 1 /US Total Inventory + '95 '05 '15 85 95