What are two ways Themistocles influenced other people?

He was an orator who was persuasive enough to garner popular support - eg getting the Athenians to spend the proceeds of a rich silver strike, which they intended to divide up amongst the populace, on building a strong navy which helped turn back the Persian invasion.

He was an astute commander, planning the response of the Greek cities to the Persian invasion and persuading the other cities to follow his plans. As part of this he persuaded the Athenians to abandon their indefensible city, send their families to shelter in other cities, and take to the sea to fight there in the ships he had provided.

He persuaded the Athenians to clearly establish their independence - facilitating the rebuilding and extension of the city walls destroyed by the Persians, which gave Athens independence from influence by Sparta.

His popular support was based largely on his populist approach - preferring to influence affairs by appealing to the people rather than trying to persuade the aristocracy. When the aristocrats regained control as a result of their leadership during the Persian war, they exiled him - the went to Argos, was implicated in a plot and fled to Asia Minor where Persian king Artaxerxes gave him governorship of a province.