The executive branch is composed of the President, Vice President and Cabinet members. President The president is the head of state, head of the U.S. government and the commander-in-chief of the U.S. military.
Menarche. The average age of menarche, or first menstruation, in the United States is 12.88 years for Caucasian girls and 12.16 years for African American girls. A popular misconception is that menarche marks the beginning of puberty; in reality, menarche occurs later in puberty.
If your menarche came before the age of 12, which is around the national average, you need to get tested for breast cancer frequently. Statistics show that, nastily enough, a pre-12 menarche has been linked to a 20 percent higher likelihood of a breast cancer diagnosis at some point in later life.