Only amendment to be ratified by approval of conventions in the three fourths of the states?

It was the 21st amendment

martin luther king (1929-1968) was an activist for the african american rights, mr. king has a profile of a kind leader that built a tenacity, respect and full of hope future. he was an activist through civil disobedience and no violence pressure mechanisms. he tried to build a more egalitarian and fair society. his efforts carried a reivindication message of the civilian rights to every west corners. for that reason, he won the nobel prize in 1964.

a. theta waves. this is because the person is in a light sleep which means the brain waves would show these kind of waves.