What was the most significant reason that Boston leaders believed their city's size needed to increase? A. The population was growing rapidly. B. Residents needed more farmland. C. New docks were needed for the growing shipping trade. D. Nearby areas had important mineral resources, including gold. Please select the best answer from the choices provided A B C D

A. the population was growing rapidly

Explanation:

Boston is the capital and the 21st most populous city in the United States. The city covers 49 square miles such that Boston has an estimated population of 692,600 in 2019. This city was founded on the Shawmut Peninsula in 1630 by Puritan settlers

Boston leaders believed their city's size needed to increase as the population was growing rapidly.

Option A is correct.

b) the confederacy had to pay all union war expenses.