In the （nineteenth) century, people （lived in) the northern area grew （their) crops on riv

The last half of the nineteenth century ______ the steady improvement in the means of trav

（The metal) aluminum （has been) （first) isolated （early) in the nineteenth century.A．The m

What is the talk mainly about？A．Overland transportation in the nineteenth century.B．Histor

Many Europeans______the continent of Africa in the nineteenth century.A．explodedB．expanded

From industrial beginnings in the nineteenth century, plastics______through a hundred and

The agriculture revolution in the nineteenth century involved two things: the inventi