Why were the Ottomans so successful at expanding and unifying their empire? They hired mercenaries called Janissaries to help them win their battles.
They had a well-disciplined and well-equipped army using the most up-to-date weap
for the time.
They hated their leaders so they punished them by fighting for land.
They believed that art and poetry were best at winning over people and expanding th
empire.

In the early days of the Ottoman Empire, the main goal of its leaders was expansion. ... It is believed that the Ottoman Empire was able to grow so rapidly because other countries were weak and unorganized, and also because the Ottomans had advanced military organization and tactics for the time.

Explanation:

they hired mercenaries called janissaries to help them win there battles

is this question from a book? ?

um how much