Select the correct answer from each drop-down menu.
The blank1 united blank 2 related to the development of blank 3

Blank 1
1Department of Transportation 2Department of State 3Department of Education 4Department of Energy

Blank 2
1energy and education programs
2energy and defense programs
3energy and homeland security programs
4energy and environmental programs

Blank 3

1the atomic bomb
2climate change
3national security
4space travel