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.
Girls experience menarche at different ages. It may not be the same as your friend. However, there is a range for most girls, which is about 11 to 14 years. A few girls may have menarche as early as age 9 or as late as the age of 15. Nevertheless, it should not be too early or too late. In general, you should see your doctor if you have your first menses before 9 or have not yet had any menses by 15 years.