Answer: The Progressive Era was a period of widespread social activism and political reform across the United States that spanned the 1890s to the 1920s.
Explanation:
Nand stands for "not and". The truth table for a nand is:
a b | a nand b
0 0 | 1
0 1 | 1
1 0 | 1
1 1 | 0
Hopefully this helps you answer your question.
