He was the military engineer who completed construction of the panama canal.
a. william crawford gorgas
b. theodore roosevelt
c. john stevens
d. george goethals

The correct answer is d. George Goethals .

He took over the responsibility over the construction of the canal in 1907 and oversaw the completion of the project in 1914. (this was ahead of schedule).
He was appointed by President Roosevelt.

Goethals' contribution was a very significant one, as at the time of his appointment some people didn't believe the project could even be completed at all.

Answer: tokugawa ieyasu (徳川家康, january 31, 1543 – june 1, 1616) was the founder and first shōgun of the tokugawa shogunate of japan, which effectively ruled japan from the battle of sekigahara in 1600 until the meiji restoration in 1868.