Answer: Porfavor de mas contexto a su pregunta.
Explanation:
Estoy is a single word you can say
True, they had a small population of around 500,000 Cubans before the US attacked at the Bay of Pigs.
Habia because Habia means there were. On the other hand we have contaba which men tell, saludaba which mean said hi, and nacia which means born. so your best bet is Habia
