Final answer:
The macro-level migration influencing circumstances include economic factors, personal preferences, local traditions, and individual skills.
Step-by-step explanation:
The macro-level migration influencing circumstances include a) Economic factors, b) Personal preferences, c) Local traditions, and d) Individual skills. Economic factors play a significant role in migration, as individuals often move to regions with better job opportunities or higher wages. Personal preferences can also drive migration, such as moving to a location that aligns with one's lifestyle or interests. Local traditions can influence migration as well, as individuals may choose to migrate to areas where their cultural practices are more prevalent. Lastly, individual skills can contribute to migration, as individuals may move to regions where their specific skills are in demand.