The third french republic was not established until four years after the franco-prussian war ended because

France continued to wage war even after the fall of Emperor Napoleon Third.

Explanation:

The system of government adopted in France after the collapse of Second French Empire in 1870  is known as third republic. The early days third republic were full of political disruptions. The republic faced political disruptions due to Franco-Prussian War and continued to wage war even after the fall of Emperor Napoleon third. It delayed the establishment of republic for four years.

the answer is b.2008 and 2012 were presidential election years.

first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.