1) Santa Anna had signed a treaty to grant Texas independence and Mexico refused to accept this treaty.
2) Texas was bankrupt.
3) Comanches and Indian groups threatened attack smaller Texan communities.
The ancient Greeks believed in multiple gods and deities who lived on Mt. Olympus. They also believed in many mythical creatures such as nymphs and centaurs. Their gods were always displayed as human-like; no one was perfect and often created arguments between them.
Since he lived in a theocratic government, he was tried by the Holy Office for teaching that the Earth revolves around the Sun which was deemed a heretic by the Catholic Church.
The Korean war lasted about three years but the Korean Armistice Agreement only ceased-fire. It did not end the war.
Meaning that it did not end after three years. It was only announced recently as of 2018 that the war might possibly come to a close after I believe at least over 60 years.