The use of robots and how they help build cars and how the assembly line has improved from the 1900's would be my answer.
The gift of science is electricity.
The post track is the oldest said to be made in 3838BC.
Answer: Petroleum exports
Explanation:
Saudi Arabia's oil exports are a major economic branch. Almost all economic income in the country (about 90%) is based on oil exports. Oil in Saudi Arabia was discovered in 1932, and since then, it has become a major economic factor in the country. Before the discovery of oil, Saudi Arabia was a poor country. The main activities were livestock and agriculture. Before discovering oil, Saudi Arabia based its economy on religious tourism, which still plays an important role in the country's economy.
Based on Oliver's situation and his parents poor credit score, a recommended federal loan that could be appropriate for him would be the Subsidized Stafford Loan. This loan is based on financial need. The interest is paid for by the government while Oliver would be in school.