I'm taking a stab at it and say the last one. sorry if I'm wrong! XD
I’d say last option for trade opportunities
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To remedy the stability problem, Bohr<span> modified the </span>Rutherford model<span> by requiring that the electrons move in orbits of fixed size and energy. The energy of an electron depends on the size of the orbit and is lower for smaller orbits. Radiation can occur only when the electron jumps from one orbit to another.</span>
Answer:
When Tlingit chiefs first learned that Alaska had been sold to the United States, they objected and advised the U. S. officials that the Russians had lived in their country only with their permission. Although they had not previously united politically, they organized to discuss their objections to the sale.
Explanation: