Which was not a feature of the post-civil war department store?
a. electricity
b. negotiation of prices
c. pneumatic tubes
d. telephones

In the Post-Civil War era, one could find many things in a department store but one thing they could not find was a. Electricity.

In the post civil-war era:

Electricity was not present at the time because it had not yet been modernized enough to allow for long distance transmission and not everyone had access to it.

In conclusion, option A is correct.

Find out more about the invention of the telephone at link.

valentina tereshkova

soviet cosmonaut valentina tereshkova became the first woman to fly to space when she launched on the vostok 6 mission june 16, 1963. valentina tereshkova was the first woman to go into space. in 1963, she spent almost three days in space and orbited earth 48 times in her space capsule, vostok 6.jan 22, 2018