Author: David Agren, Special to USA TODAY

Here’s what you need to know about the migrant caravan, from who is making the journey to why they’re going north.

Thousands of Central American migrants arrived in Huixtla, a small town of about 30,000 people in southern Mexico. They said they were forging ahead

In southern Mexico, families of Central American migrants tugged suitcases and pushed baby strollers as they made their way northward to US border.