"They promised bills and laws in favor of immigrants in exchange for votes" is the one way among the following choices given in the question that political machines, such as Tammany Hall, work with and for immigrants.
D - establishing post offices would be a implied power of Congress
In the early decades of the 18th century, English goods sold as much as 80 to 140 percent more in the colonies than in England primarily due to high transportation costs for goods shipped from England to the colonies.
Many products like tobacco, rice, dried rice, spices and lumber was transported during 18th century by American ships. And in return they got manufactured goods, textiles, guns and iron etc.
Goods exchange and services was the main work and earning of the people in 18th century. In India it was done in Gujarat majorly.
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It was easier to create maps to record their findings, and later on printing helped with creating newspapers in bulk. Hope this helped
