Both the Democratic and Whig Parties supported: O A. A national road system.
B. White male suffrage.
O c. A national bank.
D. High tariffs.

A) A national road system

Explanation:

Take note that the Democrats and Whigs didn’t necessarily get along all to well, the Democrats wanted to expand slavery and the Whigs wanted to halt the expansion of slavery into new territories.

One thing they did agree on though was the Whigs’ plans for internal improvements for things such as canals, railroads, harbors, etc.

That is why your answer is going to be A

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.