Enhancing the economy and logistics by using Railways transportation. Once the topic and the draft questions are finalized, various aspects related to the topic should be explored. For this purpose, visit Saudi Digital Library website and download at least 20 research articles (at least 10 articles must be published in last 5 years) related to the topic and draft research questions. Prepare the Literature review as per the sample format provided in the blackboard (available in Week 3 course materials). The topic must be supported by quality literature. Similarly, the individual questions (objectives), which will be converted to hypotheses, must derive support from latest and relevant literature.