Supposing electricity had never been invented, society ..., If the internet hadn't been developed in the 20th century, people ..., Humanity could have established a base on Mars by now if scientists ..., Unless world leaders had signed the climate agreement, pollution levels ..., Provided that the ancient Romans had possessed modern technology, they ..., If a major storm had hit our town yesterday, ..., Supposing that smartphones had been introduced in the 1800s, communication ..., We might have discovered cure for many diseases earlier if researchers ..., As long as the company had invested in better security systems, hackers ..., If famous historical figures had had access to social media, they ..., The city wouldn't have suffered so much traffic congestion unless ..., Provided that space exploration had received more funding decades ago, we ...

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