Mezue ahịrịokwu na-esonụ: Mgbe Agha Nnwere Onwe Gris (1821<unk>1830), e nyere Leopold ocheeze Gris n'okpuru Nkwekọrịta London nke 1830 nke kere steeti Gris nwere onwe ya, mana ọ jụrụ ya, na-ekwere na ọ dị oke egwu. Kama nke ahụ, ọ nakweere ocheeze nke Belgium na 1831 na-esote
nnwere onwe nke mba ahụ na 1830. Gọọmentị Belgium nyere Leopold ọkwa ahụ n'ihi njikọ ya na ndị eze na Europe niile, na n'ihi na dịka onye Britain kwadoro, ọ naghị esonyere ike ndị ọzọ, dịka France, nke a kwenyere na ha nwere oke ala na Belgium nke nwere ike iyi egwu nguzozi ike Europe nke e kere site na 1815 Congress nke Vienna.