Which was most significant in germany become rapidly industrialized? railroads (this is incorrect? ) imported machinery (this is definitely incorrect) the end of the napoleonic wars unification

Unification was the most significant in helping Germany become rapidly industrialized. Option D is correct.

In 1871, Prussia finally united Germany. It then marked the new phase of Germany's industrial revolution.

Furthermore, the provinces of Alsace and Lorraine that Germany took from France provided Germany even further natural resources which were vital for industrialization. Heavy industry increased and developed after the German Unification.

it was douglas macarthur..