Answer: The numeral 20
Explanation:
For the Maya, the basic unit of time, a day, was called a kin. In the second order, 20 kins made up a uinal. In a vigesimal system the third order would be 20 uinals but, instead, 18 uinals made up a tun. Thus a tun was 360 kin (days)
Gives Congress the power to take all actions "necessary and proper" to the carrying out of its delegated powers.
A - The voting rights act secured the right to vote for African Americans in 1965