Notes, summaries, assignments, exams, and problems for Secondary education

League of Nations and Post-War Settlements

The League of Nations, established on January 1, 1920, was an international institution whose primary task was to prevent future conflicts and bring global stability. It was based in Geneva, Switzerland.

• Assembly: Included all member nations.
• Council: Presided over the Assembly; initially comprised only the Allied powers.

Notably, the U.S. Senate rejected American participation, and Germany and Russia were initially barred from joining.

The Paris Peace Treaties

The peace negotiations were heavily influenced by the leaders present:

• USA (President Woodrow Wilson): Advocated for the Fourteen Points, aiming for a new world based on democracy and national self-determination.
• France (Georges Clemenceau): Sought

Key Historical Events: Early 20th Century Transformations

Prelude to Revolution: Early 20th Century Russia

• Russo-Japanese War (1904-1905): A significant defeat for Russia, exposing weaknesses in the Tsarist regime.
• Bloody Sunday (1905): Imperial guards opened fire on peaceful demonstrators in St. Petersburg, sparking widespread unrest and the 1905 Revolution.

The Russian Revolutions of 1917

The February Revolution (March 1917)

• February 23rd, 1917: Large demonstrations in Petrograd (St. Petersburg) escalated into a general strike and riots in military barracks.
• Tsar Nicholas II Deposed: The unrest led to the abdication of Tsar Nicholas II.
• Provisional Government Formed: A liberal Provisional Government was established, promising reforms and land distribution.

The Russian Revolution of 1917

Causes of the Revolution

At the beginning of the 20th century, Russia's empire extended from the Baltic to the Black Sea and from Poland to the Pacific Ocean. It was ruled by the Tsars of the Romanov dynasty and was in a state of turmoil. Dissatisfaction at the political level was due to the autocratic government of the tsars and led to political opposition made up of liberal bourgeois parties and Marxist revolutionary parties, such as the Bolsheviks.

Economic and Social Discontent

Dissatisfaction at the economic and social levels was due to the contrast between the rich minority, who owned land and factories, and the extremely poor peasants and industrial proletariat.

The Revolutions of 1905 and 1917

• In 1905, general

1.3 The Consequences of the Revolution: The USSR

Lenin's Government (1921-1924)

Lenin held all political power. In 1922, he created a political organization called the Union of Soviet Socialist Republics (USSR), made up of Russia and other Asian republics. It was organized as a federal state and adopted a New Economic Policy (NEP), which combined communist and capitalist policies. Thanks to this policy, the Soviet economy made a recovery.

Stalin's Government (1927-1953)

Lenin's successor began a new era, called 'Stalinism'. A totalitarian political system was established, which used state violence to purge society of his opponents. The economy became controlled by the state:

• Agriculture: Land was collectively owned and farmed by agricultural cooperatives

- Serf: A person who serves a lord and works in exchange for protection.

- Lord: A noble who provides protection and rules the land.

- Vassal: Lesser nobles/peasants who provide a service for protection.

- Arabs: The dominant social group who owned large states (latifundia).

- Berbers: They had converted to Islam and worked as livestock farmers, agricultural workers, or soldiers. They felt discriminated against.

- Muladíes: Natives of the peninsula who had converted to Islam. Most of them worked in agriculture.

- Mozarabs: Natives of the peninsula who had not converted to Islam and maintained their Christian beliefs.

- Bellatores: Those who wage war and defend the rest of society in times of war.

- Oratores: Those who pray and guarantee the salvation... Continue reading "Feudalism and Social Groups in Medieval Times" »

Common English Irregular Verbs

This list provides the base form, past simple, past participle, and Spanish translation for frequently used irregular verbs in English.

What is Flamenco?

The term 'flamenco' describes a type of song, a way to play the guitar, and a dance that is found essentially in Andalusia and Murcia, and even in some zones of Extremadura and Castilla-La Mancha. The word 'jondo' refers to a few classic types of songs related to the tradition of flamenco, which are different from more modern and festive versions.

The Origins of Flamenco

The origin of flamenco is uncertain: some theories believe it comes from India or Pakistan, from the Persian musician Ziryab, who worked in the courts of Cordoba in the 8th century. Others believe it has Arabic roots. There are many opinions that link flamenco with ancient Hebrew and Byzantine religious songs. And then there are others who think the Roma people... Continue reading "Understanding Flamenco: Origins and Musical Elements" »

Fundamental Forces in Physics

Weight (W)

• Weight is the gravitational force that exists between masses. Specifically, it is the force exerted on an object by a planet's gravity when the object is at the planet's surface.
• It can be calculated using the formula: W = mg
  • Where: m is the mass of the object under study, measured in kilograms (kg) in the SI unit system.
  • g is the acceleration due to gravity at the planet's surface. On Earth, g ≈ 9.81 m/s².
• Weight is directed along the line connecting the object under study with the planet's center, oriented towards the planet's center.

Normal Force (N)

• The Normal Force is a contact force that acts between two surfaces that are touching each other.
• It is often calculated indirectly, as it balances other forces

Continental Environments

Fluvial (River) Environments

• Stream/river channels
• Sand bars
• Levees
• Floodplains

Lacustrine (Lake) Environments

• Vary in depth, salinity, biological activity, and sediment
• Source sand and mud

Aeolian (Desert) Environments

• Little to no annual precipitation
• Low vegetation
• High wind
• Transport of sand grains
• Dunes contain well-sorted, well-rounded, and frosted (scratched during wind transport) sand grains sand and dust

Paludal (Swamp) Environments

• Area of anoxic (deoxygenated) water where plant material accumulates but cannot decompose (coal)
• Very low energy environment

Glacial Environments

• Glacial meltwater and sediment transport
• Sand, mud, gravel

Transitional Environments

Deltas

• Fan-shaped deposits of sediment
• Coarser sediment is commonly deposited

Latitude: Temperature increases as you go south. Precipitation is higher in the north. Relief: Altitude causes temperature to fall and precipitation to rise. Mountain ranges are barriers that block air masses. The influence of the sea makes coastal temperature milder and increases the contrast in temperature in the interior.

Oceanic Climate: Galicia to País Vasco

Temperature is mild with no great contrasts, cool winters, and mild summers. There is abundant and regular precipitation with very few dry months. Vegetation is characterized by deciduous forests of oaks and beeches, meadows, and grasslands.

Mediterranean Climate: Mediterranean coast and interior

Precipitation is moderate (800-300) and irregular with droughts in summer. Temperature doesn'... Continue reading "Climate and Vegetation Types in Spain" »