Answer:
urges men to protect the women and children by moving to Britain
Step-by-step explanation:
According to the principle and Historical significance, the persuasion tactic that is used in this picture is that it is urging men to protect the women and children by moving to Britain.
This is necessary and important because an image of a woman and children are used which is used to motivate the men to fight for what they love so that they would not lose them.