after germany’s unification in 1871, industrialization accelerated and1 surpassed the us becoming first in steel production.2 industrialization continued mainly in the west.3 workers for industrial jobs were difficult to find.4 constructed vast networks of railroads.

The correct answer is alternative 4 (D): "Constructed vast networks of railroads."

After its unification, German Industry grew strong, but it didn't surpass the US in steel production, and industrialization continued all over the land. Besides, it wasn't hard to find workers for industrial jobs.

The construction of railroads is both a result of and a factor in the industrial growth of Germany.

jim crow law, in u.s. history, any of the laws in which racial was enforced, in the south between the finish of reconstruction in 1877 and the start of the social liberties development during the 1950s.

jim crow was the name of a minstrel routine( jump jim crow) performed starting in 1828 by its creator, thomas dartmouth ("daddy") rice, and by numerous imitators, including on-screen character joseph jefferson.

the term came to be a defamatory sobriquet for african americans and an assignment for their segregated life. the segregation rule was stretched out to parks, graveyards, theaters, and eateries with an end goal to keep any contact among blacks and whites as equivalents.

it was classified on neighborhood and state levels and most broadly with the "separate yet equivalent" choice of the u.s. preeminent court in plessy v. ferguson (1896).

simplify brackets

8 - 2a - 7 = a + 40

simplify 8 - 2a - 7 to -2a + 1

-2a + 1 = a + 40

add 2a to both sides

1 = a + 40 + 2a

simplify a + 40 + 2a to 3a + 40

1 = 3a + 40

subtract 40 from both sides

1 - 40 = 3a

simplify 1 - 40 o -39

-39 = 3a

divide both sides by 3

-39/3 = a

simplify 39/3 to 13

-13 = a

switch sides

a = -13