The last decade of the 19th century saw an incredible expansion in use of the a. press
b. radio
c. Internet
d. television

Answer is B. radio the 19th century saw an incredible expansion in use of

christopher columbus (1492–1504)

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.