He subsequently led colonization efforts on Kitadaitōjima and Okidaitōjima, which also had substantial deposits of guano, which was mined for phosphate-based fertilizer and gunpowder.
Those two islands had substantial deposits of guano, which was mined for phosphate-based fertilizer and gunpowder. He subsequently led colonization efforts on Kitadaitōjima and Okidaitōjima.
He subsequently led colonization efforts on Kitadaitōjima and Okidaitōjima. Those two islands had substantial deposits of guano, which was mined for phosphate-based fertilizer and gunpowder.
He subsequently led colonization efforts on Kitadaitōjima and Okidaitōjima. Those two islands had substantial deposits of guano, which was mined for phosphate-based fertilizer and gunpowder.