The answer would be sheep because all of the others were first from Australia.
Answer:
Portuguese discoveries (Portuguese: Descobrimentos portugueses) are the numerous territories and maritime routes recorded by the Portuguese as a result of their intensive maritime exploration during the 15th and 16th centuries. Portuguese sailors were at the vanguard of European exploration, chronicling and mapping the coasts of Africa, Canada, Asia, and Brazil, in what became known as the Age of Discovery. Methodical expeditions started in 1419 along West Africa's coast under the sponsorship of prince Henry the Navigator, with Bartolomeu Dias reaching the Cape of Good Hope and entering the Indian Ocean in 1488. Ten years later, in 1498, Vasco da Gama led the first fleet around Africa to India, arriving in Calicut and starting a maritime route from Portugal to India. Portuguese explorations then proceeded to southeast Asia, where they reached Japan in 1542, forty-four years after their first arrival in India.[1] In 1500, the Portuguese nobleman Pedro Álvares Cabral became the first European to discover Brazil.
Hundred years ago, in the beginning of the 20th century the entire world population was less than 2 billion people.
Today, in 2017, the current world population has exceeded 7 billions (7,299,000,000).
The world’s population is growing by 200,000 people a day!, but death and birth rates have declined over the past several decades. (World Bank)
See some Demographic Data for the Countries and Regions of the World:
Top 25 countries by population
The most populated countries in the world.
Population Density
Countries with the highest population density.
Well you didn't list any options but primary sources provide direct evidence think of it like an eyewitness some examples includes photographs speeches diaries and so on
Defeating the democratic nominee was one and President Nixon promised to be a better leader for the Vietnam war (1968 I think)
:)