Why was the formation of labor unions an effect of industrialization in the late 1800s? A. Unions were needed to guarantee a steady supply of workers
B. Union membership was required for employment in new industries
O
C. Factory owners set up labor unions in order to control their large workforce
D. Unions organized industrial workers to protest unsafe working conditions and long workday

the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.

in 1859, brown and 21 of his followers attacked and occupied the federal arsenal in harper's ferry. their goal was to capture supplies and use them to arm a slave rebellion. brown was captured during the raid and later hanged, but not before becoming an anti-slavery icon. abolitionist and insurrectionist

explanation:

the steam engine.

the locomotive.

the telephone.

the telegraph.

the internal combustion engine.

the rifle.

ironclad ships.

electricity/light bulb.

john maynrd keynes developed new economic respose to the                           ( b. great depression if the 1930's)