The effect of Wilmington being under military rule was that:
In the year 1898, Wilmington, North Carolina saw a race riot where White Supremacists came against Black people. They blocked off the city and searched all Black people entering.
They also fired weapons into Black-owned homes and attacked Black people they didn't like. This led to the deaths of many Blacks as well as the destruction of a large number of Black businesses.
Find out more on the effects of the Wilmington massacre at https://brainly.com/question/13491600.