|3. explain how martinsburg, west virginia became so popular.

Martinsburg became a center of the railroad industry and its workers. The Great Railroad Strike of 1877 began July 14, 1877 in this city at the Baltimore and Ohio Railroad Martinsburg Shops

Explanation:

the answer is "focused on"

lol gave an answer 1 week that's the answer for those who need it in the future xd

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.