changed
...that the borders of the states and territories of the United States have changed over 90 times since the United States Constitution was adopted by the Philadelphia Convention on 13 July 1787?
...that the borders of the <a href="./U.S._state" id="mwCrk" rel="mw:WikiLink" title="U.S. state">states</a> and <a class="mw-redirect" href="./United_States_territory" id="mwCro" rel="mw:WikiLink" title="United States territory"> territories</a> of the <a href="./United_States" id="mwCrs" rel="mw:WikiLink" title="United States">United States</a> have <b id="mwCrw"><a href="./Territorial_evolution_of_the_United_States" id="mwCr0" rel="mw:WikiLink" title="Territorial evolution of the United States">changed</a></b> over 90 times since the <a class="mw-redirect" href="./United_States_Constitution" id="mwCr4" rel="mw:WikiLink" title="United States Constitution">United States Constitution</a> was adopted by the <a class="mw-redirect" href="./Philadelphia_Convention" id="mwCr8" rel="mw:WikiLink" title="Philadelphia Convention">Philadelphia Convention</a> on <a class="mw-redirect" href="./13_July" id="mwCsA" rel="mw:WikiLink" title="13 July">13 July</a> <a href="./1787" id="mwCsE" rel="mw:WikiLink" title="1787">1787</a>?