Identify the activities in the early nineteenth century that promoted national unity by strengthening the nation’s economy.

1. the construction of canals
2. the promotion of US
businesses
3. the formation of the
Federalist Party
4. adding tariffs on foreign goods
5. building roads

Adding tarrifs on foreign goods and building roads promoted the national unity by strengthening the nation's economy.

Explanation:

because it gave rise to more trade and business.Roads were helpful in travelling and transportation of goods and adding tarrifs was beneficial for economy.

- "it was a failure that was an embarrassment for the kennedy administration."

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the answer is a

explanation: