None of this would be happening right now if the prior administration didn't 𝐟𝐚𝐜𝐢𝐥𝐢𝐭𝐚𝐭𝐞 the invasion 10-30 million invaders in 4 years
Roman concrete was remarkable because it could last for thousands of years, even underwater. Its mixture of lime, volcanic ash, and water allowed it to develop cracks that didn’t weaken it. When water entered a crack, it reacted with the lime to form calcium carbonate, which gradually filled the crack and bonded the concrete back together, essentially giving it a natural self-healing ability.
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