Why did Haiti earthquake happen?

Answer 1

Haiti earthquake happened because the Carribbean plate and the North American plate clashed. The Carribbean plate moves about 20mm eastwards each year and the North American moves much slower.

That's why the plates crashed and an earthquake happened.

oh yeah. You are very kind

Answer 2

The Haiti earthquake in 2010 was caused by a slip along a previously unmapped fault. Haiti sits on a fault line where the Caribbean and North American tectonic plates meet, making it seismically active. The shallow depth of the earthquake and poor building construction contributed to the extensive damage and loss of life.