The major thyroid hormone that is produced by the thyroid gland is thyroxine (T4). A small amount of another thyroid hormone, triiodothyronine (T3), is also made by the thyroid gland. Thyroid hormones have far-reaching effects on the body, in essence governing the body's metabolic rate.
In 1867, Congress passed a law requiring the former Confederate states to include black male suffrage in their new state constitutions. Ironically, even though African American men began voting in the South after 1867, the majority of Northern states continued to deny them this basic right.
With the adoption of the 15th Amendment in 1870, a politically mobilized African-American community joined with white allies in the Southern states to elect the Republican Party to power, which brought about radical changes across the South.