What was the motivation for the exchange of commerce along the Silk Roads, Sea Roads, and Sand Roads? A)
The acquisition of hard-to-find luxury items sustained trade along these
three exchange networks.
B)
Imposing cultural traditions on new people motived the exchange of
commerce along these three networks.
C)
The exchange of commerce along these three networks was motivated by
an opportunity to expand empires and take over new land.
D)
Exchange of commerce was influenced by similar climates along the three
networks. This allowed for easier exchange of goods and ideas.

The desire of elites for hard-to-find luxury items from distant parts of the

Eurasian network, as well as the accumulation of wealth, especially among

merchants who participated in the trade, motivated long-distance commerce.

Sustaining the commerce were the support of empires and smaller states that

benefited directly from the trade

lol   that was   funny : >

angel island immigration station was an immigration station located in san francisco bay which worked from 1910 to 1940. the majority of immigrants that got there were from the asian hemisphere, specifically from china, japan, russia, and south asia, being china the country from where more people arrived.

the number of foreigners arriving at it took the attention of americans who feared the new arrivals would take their jobs. the work opportunities were not abundant due to the economic comedown of 1870 and the asians, as newcomers, were willing to work for cheaper wages. soon they started to be seen as a threat, which led to an increased discrimination against the chinese - the biggest ethnicity arrived at this station until 1915 when japanese immigrants outnumbered them - being considered as unsuitable americans hence their looks and social situation.

at the station, the immigrant's detention may vary depending on how long the interrogation process took: it could be weeks, months, or even years.

finally, in 1940 an explosion destroyed administration building located on the island, so the united states government decided to stop the process.