 Complete the following phrase:  After Frederick William IV suffered a stroke, his brother William I became regent 1857 and king 186188. He desired to reform the army, which conservatives such as Roon considered to have degraded since 1820 because of liberalism. The king wanted to expand the armywhile the populace had risen from 10 million to 18 million since 1820, the annual army recruits had remained 40,000. Although Bonin opposed Roons desired weakening of the Landwehr, William I was alarmed by the nationalistic 