Answer:

1) Although crusades failed to capture Jerusalem,they had several major impacts on western Europe.

- They increased the authority of the king.

- Europeans were also introduced to many new trade goods while on crusade, including silk,cotton,different species and new foms of art and literature.

- The crusades contributed to increase wealth of the church and the power of the papacy.

- They helped to breakdown the power of the feudral aritocracy and to give prominence to the king and the people.

2) Music became the voice for groups in medival periods by singing their musing together according to the tunes.For example, A cappella,music is specifically group singing without music.

3) One of the significant geners of sacred renaissance music was the motet. A motet can be defined as unaccompaid choral composition based on a sacred latin text. In general motets used religious texts not used in the mass, since because by this time, the mass already has standardized music.Motets were often Polyphonic,meaning there were various vocal parts sung at the same time.Though motets started being written in late medival era(ca. 1200) they developed greatly in and are mostly associated with the renaissance era.