George Goethals was the military engineer who completed construction of the Panama Canal. The correct option among all the options given in the question is option "d". He was appointed the chief engineer of the Panama project by President Roosevelt on 26th of February in the year 1907. Goethals was absolutely determined in seeing through the job that was handed over to him by the President.
They needed to find more land for more opportunities for factories and trading. To spread their civilization to other people
One of the major controversies in developmental psychology centers if development is continuous or discontinuous. Those psychologists who support the continuous view of development suggest that development involves gradual and ongoing changes throughout the life span, with behavior in the earlier stages of development providing the basis of skills and abilities required for the next stages. Not all psychologists, however, agree that development is a continuous process. Some view development as a discontinuous process. They believe development involves distinct and separate stages with different kinds of behavior occurring in each stage. This suggests that the development of certain abilities in each stage, such as specific emotions or ways of thinking, have a definite starting and ending point. However, there is no exact time at which ability can appear or disappears. Although some types of thinking, feeling or behaving may seem to appear suddenly, it is more than likely that this has been developing gradually for some time. Stage theories of development rest on the assumption that development is a discontinuous process involving distinct stages which are characterized by qualitative differences in behavior. They also assume that the structure of the stages is not variable according to each individual, however the time of each stage may vary individually. Stage theories can be contrasted with continuous theories, which posit that development is an incremental process.