Pls help I don’t know the answer

What is the term for a re-current musical section between various contrasting sections

Natural minor half steps between scale degrees 3 and 4; 7 and 8 harmonic minor half steps between scale degrees 2 and 3; 5 and 6 ascending melodic minor half steps between scale degrees 2 and 3; 5 and 6; 7 and 8 major half steps between scale degrees 2 and 3; 7 and 8

Arrange the events in graphic design history in chronological order. william morris commercialized graphic design.