1. Jericho was sacked and destroyed many times, not just "in 1570 BCE." Not surprising since it sat on a major trade route, was constantly being fought over, and is one of the oldest human settlements. You can find a sacking and destroying of Jericho for just about any ancient time you want.
2. "Exodus might have had something to do with the civil war in Egypt..."
In thousands of years of recorded Egyptian history, there is exactly ONE mention of "Israel". On the Meneptah Stele, created by the son of Ramses II, who ruled around the 13th century BCE. I am lucky enough to have seen the Stele myself, since I lived in Egypt for 4 years.
(Travel Tip: do not try to impress your Egyptian tour guide with the Cecil B. DeMille Version of Pyramid-Building. They know better, and HATE that crap. The only that pisses them off even worse is telling them that space aliens built the Pyramids.)
According to the Stele, the Israelites didn't come to Egypt for some Bondage & Domination - Meneptah went to them. First he took his army west and put down a Libyan insurgency. Then he marched east, thru Palestine.
The Stele lists the cities and territories conquered, ending with:
"The seed of Israel is crushed. It is no more." Which is pretty funny, considering the Seed of Israel is still sitting there annoying the Egyptians to this very day.
http://www.molon.de/galleries/Egypt/NatMuseum/Other/img... Xian revisionists often say that Egyptians didn't mention the Exodus because they were "embarassed" by the loss of their army in the Red Sea, etc. But Egyptian history has recorded some even more embarassing episodes. Like the Pharoah who was killed by two of his harem girls.
3. Bonus Trivia - at least once in ancient times, Israel and Rome - yes, THAT Rome - fought as allies against Egypt. When Julius Caesar threw in with Cleopatra in 48 BCE, he was between a rock and a hard place. He was outnumbered nearly 10-to-1 by the Egyptian army of the boy-king Ptolemy XIII.
Caesar sent letters and messengers all over the Middle East, screaming for help. One of those appeals was answered by a respected Jewish community leader in the rich port city of Askalon. His name was Antipater, the father of Herod The Great.
Antipater not only raised a force of 3,000 Jewish infantry to help Caesar, he also enlisted the help of another influential leader - Hyrcanus bar Alexander, no less than the High Priest of Jerusalem (and also ethnarch, or Chief Magistrate, of Jerusalem.) Hyrcanus asked the Jewish elders to support Caesar with money, supplies and soldiers. Which they did.
A partial source for that trivia, BTW, is the Xians' favorite historian, Flavius Josephus. According to him, it was the Jewish forces who saved the day at a major battle in Egypt. One that Josephus called "the battle of the Jews' Camp."