A.Visit Laredo in summer and Amarillo in winter.
B.Visit Laredo in winter and Amarillo in summer.
C.Visit Laredo in spring and Amarillo in autumn.
D.Visit Laredo in winter and Amarillo in autumn.
A.Because they wanted to find more food.
B.Because they wanted to build new camps.
C.Because they wanted to escape enemies.
D.Because they wanted to find new spices.