How were the trans-saharan trade routes different from the silk road?
a. merchants on the trans-saharan routes to spread islam; the silk road was not influenced by islam.
b. trans-saharan routes restricted trade to within africa; the silk road restricted trade to areas within asia.
c. trans-saharan trade routes were primarily land based; the silk road was both land and sea based.
d. salt was traded on the trans-saharan trade routes; salt was not traded on the silk road.

Trans-Saharan trade routes were primary land-based.

The Silk-Road was both sea and land-based.

Explanation:

The trans- Saharan trade route connected the sub-Saharan, north-Africa and the Mediterranean, the camel was the primary source of trade without domestication camel this trade route was not possible, African ivory, salt, and gold were traded in this route and in return they get horses, dates, and salt, etc.

While on the Silk route Silk was the major product of trade, this road was named silk road because the major and main trade is "Silk" in ancient times this road connects china with the roman empire.

the main inference that can be drawn from jean jacques rousseau's book the social contract is: a. people can enjoy civil and physical freedom, even if it sometimes harms society.

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