Can you help me with the following sentences?

Please paraphrase "A new species, it was unique to Bali - moreover, it is this island's only endemic bird."

1 His election success has provoked a shocked reaction. What does "shocked reaction" mean?

2 Much of London’s energy and resilience stems from the fact that London has always been a city that relied on migrants.

What does "resilience" mean?

3 The trade imbalance is likely to rise again in 1990. Hence a new set of policy actions will be required soon. What does "a new set of policy actions will be required soon." mean?