Portugal is defined as a Mediterranean climate (Csa in the South, interior, and Douro region; Csb in the North, Central Portugal and coastal Alentejo; mixed oceanic climate along the northern half of the coastline and also Semi-arid climate or Steppe climate (BSk in certain parts of Beja district far South) according to the Koppen-Geiger Climate Classification), and is one of the warmest European countries: the annual average temperature in mainland Portugal varies from 812 C (46.453.6 F) in the mountainous interior north to 1619 C (60.866.2 F) in the south and on the Guadiana river basin. The Algarve, separated from the Alentejo region by mountains reaching up to 900 metres (3,000 ft) in Alto de Foia, has a climate similar to that of the southern coastal areas of Spain or Southwest Australia.
How high do the mountains between Algarve and the Alentejo region reach?
900 metres (3,000 ft)

After Charles II of England (16301685) was restored to the English throne in 1660 following Oliver Cromwell's Protectorate, he granted the chartered Province of Carolina to eight of his loyal friends, known as the Lords Proprietors, on March 24, 1663. It took seven years before the group arranged for settlement expeditions. The first of these founded Charles Town, in 1670. Governance, settlement, and development were to follow a visionary plan known as the Grand Model prepared for the Lords Proprietors by John Locke.
What year was Charles Town founded?
1670

The United Nations Charter states that treaties must be registered with the UN to be invoked before it or enforced in its judiciary organ, the International Court of Justice. This was done to prevent the proliferation of secret treaties that occurred in the 19th and 20th century. Section 103 of the Charter also states that its members' obligations under it outweigh any competing obligations under other treaties.
In which centuries did a proliferation of secret treaties occur that led the United Nations Charter to include an obligation to register treaties to be invoked before it?
19th and 20th century