What is the fine-grained topic of the following text: On these items, both the Centre and the provinces were entitled to legislate, but it was also laid down in the Constitution that in case of conflict between the laws made by the Centre and a province with respect to a subject in the Concurrent List, it was the federal law which was to prevail, no matter which of the two laws were made first. Only return the topic.
Federal and provincial legislative powers in case of conflict