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

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration