Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Western Wayne Athletic Conference
Table title:
Former members
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > School </th><th colspan=1 rowspan=1 > Nickname </th><th colspan=1 rowspan=1 > Location </th><th colspan=1 rowspan=1 > Joined </th><th colspan=1 rowspan=1 > Previous Conference </th><th colspan=1 rowspan=1 > Left </th><th colspan=1 rowspan=1 > Succsessive Conference </th></tr>
<tr> <td colspan=1 rowspan=1 > Inkster </td><td colspan=1 rowspan=1 > Vikings </td><td colspan=1 rowspan=1 > Inkster </td><td colspan=1 rowspan=1 > 2013 </td><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > 2013 </td><td colspan=1 rowspan=1 > None (school shut down)* </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Belleville </td><td colspan=1 rowspan=1 > Tigers </td><td colspan=1 rowspan=1 > Belleville </td><td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > Michigan Mega Conference </td><td class="highlighted"  colspan=1 rowspan=1 > 2018 </td><td class="highlighted"  colspan=1 rowspan=1 > Kensington Lakes Activities Association </td></tr>
<tr> <td colspan=1 rowspan=1 > Dearborn </td><td colspan=1 rowspan=1 > Pioneers </td><td colspan=1 rowspan=1 > Dearborn </td><td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > Michigan Mega Conference </td><td colspan=1 rowspan=1 > 2018 </td><td colspan=1 rowspan=1 > Kensington Lakes Activities Association </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Dearborn Fordson </td><td colspan=1 rowspan=1 > Tractors </td><td colspan=1 rowspan=1 > Dearborn </td><td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > Michigan Mega Conference </td><td class="highlighted"  colspan=1 rowspan=1 > 2018 </td><td class="highlighted"  colspan=1 rowspan=1 > Kensington Lakes Activities Association </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Dearborn Edsel Ford </td><td colspan=1 rowspan=1 > Thunderbirds </td><td colspan=1 rowspan=1 > Dearborn </td><td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > Michigan Mega Conference </td><td class="highlighted"  colspan=1 rowspan=1 > 2018 </td><td class="highlighted"  colspan=1 rowspan=1 > Downriver League </td></tr>
</table>
Question:
What are the changes happened to Belleville, Dearborn, and Fordson in 2018?
Answer:
In 2018, Belleville, Dearborn and Fordson all left the Western Wayne Athletic Conference to join the Kensington Lakes Activities Association, while Edsel Ford left the same year to join the Downriver League.