Fill in the Blanks (Reading & Writing)

The umbrella's earliest recorded use dates back thousands of years, when it primarily —providedprovidesprovidingprovide shade from the sun rather than shelter from rain. Only later did societies in wetter climates —adaptadaptationadaptedadapting the design to repel water using oiled fabrics. Today's folding umbrella, patented in the nineteenth century, remains largely —unchangedchangelessunchangingchanged in basic mechanism.