Why did early Bantu-speaking peoples of Africa use the slash- and-burn method of farming in the forests?

When a small part of the forest is cut down and burned, ashes are mixed into the soil, creating a fertile garden. This caused them to frequently have to move.

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.

the governor can not veto a referendum that the voters approve