Answer:
They developed many techniques for structures and construction of all types, including some inventions.
Explanation:
It seems that Linda is suffering from anxiety or a panic attack. The theory of emotion would be anxiety.
I don't know if this will help but maybe because no rights of citizenship were extended to African Americans and any successes they achieved was only permitted within a circumstated area.....Hope that helps
C. the heads of executive departments need to be approved by Congress, while the heads of the EOP do not.