Answer:
The tabulating machine was an electromechanical machine designed to assist in summarizing information stored on punched cards. Invented by Herman Hollerith, the machine was developed to help process data for the 1890 U.S. Census. Later models were widely used for business applications such as accounting and inventory control. It spawned a class of machines, known as unit record equipment, and the data processing industry
It helped their crops tremendously with growth and production. Floods fed the crops enough to produce a lot and grow aswell.
Africa has a large quantity of natural resources, including diamonds, sugar, salt, gold, iron, cobalt, uranium, copper, bauxite, silver, petroleum and cocoa beans, but also woods and tropical fruits. Having a low human density, for a long period of time Africa has been colonized by more dynamic groups, exploiting African resources.
The x-ray was the only way to glimpse a view of a living human brain before the 1970's
USA trade intrests in the Mediterranean and the Atlantic were severely affected, and any effort to secure those intrests meant war. In addition, after the war, the world became polarised and the Soviets who were communists were aggressively expanding around the globe, which implied that American system of free trade and democracy was being threatened.
