Why did some revolts succeed and others fail?

based on popularity. How many people can you attract and assemble for a revolt.

Explanation:

more than any particular socioeconomic level which may be said to make a polity ripe for revolutionary change, a movement's ability to assemble a broad "negative" coalition of diverse domestic groups and foreign supporters, including elite groups and the middle class, may be essential for success.

i think they would live in caves or natural tunnels

a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )