How to manage this template's visibility

• Use {{Modern impact events |collapsed}}  to show this template in its collapsed (hidden) state.
• Use {{Modern impact events |expanded}}  to show this template in its expanded (fully visible) state.
• Use {{Modern impact events |autocollapse}}  to show this template in its collapsed (hidden) state only if there is another template of the same type on the page.
• Unless set otherwise (see state parameter within the template's code), autocollapse is the default state.