Place the events relating to the nuclear arms race in chronological order, starting with the earliest.
Drag each tile to the correct box.
50,000
40,000
30,000
20,000
10,000
0
US and USSR/Russia Stockpiled Nuclear Warheads
United States
USSR/Russia
1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010