When is a vessel operator required to use navigation lights?

During periods of restricted visibility.

Explanation:

Navigation lights are particularly needed when boaters meet at night. These lights have to be used from sunset to sunrise, as well as through times of restricted visibility, like in the case of fog, mist, snow, or heavy rain. The different types of navigation lights are Sidelights, Sternlight, Masthead Light, and All-Round White Light.

the law supported victims of political persecution.

explanation:

i do believe its (d) it allowed the government to offer pioneers sixty acres of western land if they lived on it and made improvements to it.

explanation: signed into law in may 1862, the homestead act opened up settlement in the western united states, allowing any american, including freed slaves, to put in a claim for up to 160 free acres of federal land. by the end of the civil war, 15,000 homestead claims had been established, and more followed in the postwar years