This city installed a gas-lit traffic signal outside Parliament in 1868.

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The first traffic signal, installed in London in 1868, ran on gas and exploded not long after it was put in place. Source: Traffic light ↗

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01These brothers made sustained, controlled, powered flights at Kill Devil Hills in 1903.IDENTIFY
Wright brothers
The Wright brothers achieved the first sustained powered flight in 1903, lasting just twelve seconds.
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02He became the first human in space in 1961.IDENTIFY
Yuri Gagarin
Yuri Gagarin became the first human in space in 1961, completing a single orbit before returning safely.
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03He took the first human steps on the Moon during Apollo 11.IDENTIFY
Neil Armstrong
Neil Armstrong became the first person on the Moon in 1969, calling it one giant leap for mankind.
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