Who was the Macedonian leader who expanded the Empire as far as the Indus River Valley

Although king of ancient Macedonia for less than 13 years, Alexander the Great changed the course of history. One of the world's greatest military generals, he created a vast empire that stretched from Macedonia to Egypt and from Greece to part of India.

treaties

explanation:

basic principles: federalism, separation of powers, checks and balances, judicial review, representative democracy, limited government, rule of law, individual rights and responsibilities, consent of the governed, majority rule, popular sovereignty, equal protection.