Why did they start appointing president

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.  

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.