Why did Sarah Josepha Hale believe in the need for a national Thanksgiving celebration?

She believed that such a unifying measure could help ease growing tensions and divisions between the northern and southern parts of the country.

Explanation:

she believed that such a unifying measure could help ease growing tensions and divisions between the northern and southern parts of the country

Explanation:

increased food supply

improved public health

increased birth rates

hope this : d

i think its the outcome of people's preferences.