The weakening of the tokugawa shogunate allowed nationalist groups to

take over the japanese military.
destroy relations with the us.
ask for more support from the us.
demand a change in government.

Answer:

The weakening of the Tokugawa Shogunate allowed nationalist groups to D: demand a change in government.

Explanation:

The weakening of “Tokugawa Shogunate” in Japan was caused due to many factors.  Under Tokugawa rule, there was dictatorship  of “bakufu”, with the shogun at the top. He was only to be prayed by poeple.  

There was unemployment and dissatisfaction in people. So, Japanese started an anti-bakufu movement.

Then there was alliance of “Satsuma” and “Choshu” which led to final collapse of "Tokugawa Shogunate". Gradually, Emperor “Meiji” completely controlled the country and Japan was completely changed and became a world power.

your answer will be b. improving roads, bridges, and other infrastructure. hope i !