Please help me I have been stuck with these questions!!! Where did “Turks” originally come from?

How did these peoples get the name “Turk”?

What brought Turks into contact with the Middle East and Europe?

Where did the Seljuks migrate to?

How did they adapt to native customs there?

Why did the Seljuk Empire begin to weaken in the 12th century?

How did Osman obtain land located in northwest Anatolia?

Why did Osman’s location near the Byzantine Empire actually help him expand his territories?

What successes did Osman experience against the Byzantine Empire? How did this help him?

What prevented Osman’s control of trade between the Black & Mediterranean Seas?

Why did Osman wait until the last Seljuk Sultan died before attempting to conquer the rest of Anatolia?

What occurred in 1299? Why is this date important?

How long did the Ottoman Empire last?