Here's where every major character on 'The Crown' ended up on season 4

Queen Elizabeth II (Olivia Colman) bumped heads with newly appointed Prime Minister Margaret Thatcher (Gillian Anderson) throughout season four.

Although the Queen eventually admitted that they share a lot in common, the two had very different perspectives on the political climate.

Despite her aim to remain apolitical, Elizabeth undermined Thatcher's sanctions on South Africa and publicly expressed her disappointment in the prime minister's political measures.

But at the end of season four, the two were able to put their complicated relationship to rest as Thatcher's tenure ended.

After 11 years in power, Thatcher received the first serious blow to her political career when her Deputy Prime Minister Sir Geoffrey Howe (Anthony Head) delivered a withering resignation speech to Parliament.

In an audience with the Queen, Thatcher initially dismissed everything as an "insignificant internal party squabble." But it quickly became evident that the tides had turned against her.

After the idea of dissolving Parliament was dismissed, Thatcher stepped down and the "Iron Lady" was nearly brought to tears.

After her retirement, the Queen bestowed Thatcher with the rare Order of Merit award in recognition of her service to their country.

When Diana (Emma Corrin) initially met Charles (Josh O'Connor), the Prince of Wales was taken aback by her beauty and charm.

But as season four progressed, Diana and Charles were going through the motions of their marriage in the public eye while shouting behind closed doors.

Throughout the 1980s, Charles continued an affair with Camilla Parker Bowles (Emerald Fennell) and chose her time and again over his wife. In return, Diana had an ongoing affair with cavalry officer James Hewitt (Daniel Donskoy).

At the end of the season, Diana could barely hold herself together.

After years spent dealing with an eating disorder and pouring love into her sons while failing to earn acceptance from the Queen, Diana fought back tears as the royal family took their annual Christmas photo at Balmoral.

Throughout season four, Prince Charles became increasingly frustrated by his mother's refusal to grant him and Diana a separation.

By the finale, the couple could barely say two words to each other without it turning into a fight.

As their fighting escalated, Charles started blaming Diana for hurting Camilla's feelings, which led to a memorable screaming match at the end of the season.

Over Christmas, Charles once again cornered the Queen to tell her how deeply unhappy he was with his marriage. Instead of offering sympathy, Charles was met with Elizabeth's ire as she told him to grow up and behave like a king.

The Queen's husband, Prince Philip (Tobias Menzies), had a quieter role on season four but was often seen flitting in and out of scenes with his family.

At the end of the season, Philip checked in on Diana at the Christmas party and tried to comfort her. But once he realized that Diana's pain couldn't be brushed away with jokes, his voice took on a harder edge.

Just as Elizabeth urged Charles to remember his loyalty to the throne, Philip reminded Diana that everyone in the royal family is second to the Queen.

He left the conversation on a bitter note.

Throughout season four, Charles and Camilla found times to sneak away and be together — even while Camilla was actively encouraging him to pursue Diana.

Charles and Camilla's relationship only heightened the tension between Charles and Diana, to the point where multiple other members of the royal family got involved in trying to end Charles' affair.

When Charles and Diana took a trip to New York and the media's love for "Lady Di" grew, Camilla told Charles that she was terrified of the harassment and hate she would receive if their affair was ever made public.

The two end up deciding that it's best if they stay in their marriages, for now.

The Queen's sister, Princess Margaret (Helena Bonham Carter), was largely pushed to the periphery of season four — except for episode seven, "The Hereditary Principle."

Margaret requested more royal duties from the Queen but was instead told that her role as Counsellor of the State would be given to Prince Edward (Angus Imrie).

Driven into a depression by a health scare and her loss of duty, Margaret sought help.

To her surprise, her new therapist (Gemma Jones) informed her that there was a history of mental-health issues in the royal family and that she had two cousins, Katherine and Nerissa Bowes-Lyon, residing in an asylum.

Although public records showed that the sisters were dead, a confrontation with the Queen Mother (Marion Bailey) exposed that they were sent away because of developmental disabilities caused by inbreeding in the bloodline.

Pressured to keep quiet, Margaret kept her royal title and returned to her life of entertaining on her private island of Mustique.

Princess Anne (Erin Doherty) is the Queen's only daughter and eighth in line for the throne. Although Elizabeth insisted she could never pick a "favorite" child, Philip was quick to respond that Anne was his.

Athletic and strong-minded, Anne continued pursuing horseback riding at an Olympic level. But underneath the surface, Anne struggled with her own vulnerabilities as her marriage to cavalry officer Mark Phillips (Geoffrey Breton) took a sharp downward turn.

After Anne confessed to her mother that she was having an affair with her bodyguard, the Queen had him transferred in an attempt to protect her family's image.

When season four came to a close Anne remained close to her mother despite their disagreements.