GOC should have provided him insight into how the operations and decision making works in the American Headquarters. Along with setting up formal meetings with the Managers he would be working alongside, and built up the relationship(s) through appropriate outlets, not going out for informal after work catchups, especially before those solid foundations and professional boundaries are setup. Collins should have been advised to discuss directly with those Managers to distribute information on new approaches to their teams.
The suez canal is extremely important to the people of North Africa. It is a well known trade route for many foreign countries. It also provides transportation for the people of north Africa. It is a great support for the economy of the surrounding countries it is in.
Id assume this question is meant to be multiple choice as there are many countries in which Christianity is illegal but the most prominent to me would be China.