Question

find the main idea by paragraph
paragraph #5
in 491 bce, darius sent messengers to the greek city - states, demanding that they submit to persian rule. the greeks refused and even executed the messengers. this act of defiance led to further conflict.
the main idea of this paragraph is:
i think...
paragraph #6
in 490 bc, the persians sent another force to greece, this time across the aegean sea. they attacked the cyclades before trying to capture athens. the persian army, led by general datis, landed at marathon. the greeks, led by either miltiades or callimachus, met them there. the greeks won the battle of marathon, which was a major victory.
the main idea of this paragraph is:
i think...

Explanation:

For Paragraph #5: The text centers on the Greek city-states' refusal of Persian rule in 491 BCE, which triggered more conflict.
For Paragraph #6: The text focuses on the 490 BCE Persian invasion of Greece that led to the Greek victory at the Battle of Marathon.

Answer:

1. The main idea of Paragraph #5: In 491 BCE, Greek defiance of Persian demands led to further conflict between the two sides.
2. The main idea of Paragraph #6: In 490 BCE, the Persians invaded Greece, resulting in the Greeks winning the major Battle of Marathon.