21st-century economic migration of Poles
... that 21st-century economic migration of Poles is comparable in size to the century-old migration of Poles to the United States?
... that <b id="mwARE"><a class="mw-redirect" href="./21st-century_economic_migration_of_Poles" id="mwARI" rel="mw:WikiLink" title="21st-century economic migration of Poles">21st-century economic migration of Poles</a></b> is comparable in size to the century-old <a href="./History_of_Poles_in_the_United_States" id="mwARM" rel="mw:WikiLink" title="History of Poles in the United States">migration of Poles to the United States</a>?